Tag Archives: Fall migration

Common grackles part of November’s changing bird lineup

 

Photo by Bernell MacDonald/Pixabay.com • Common grackles are quite accomplished at foraging for food in a variety of habitats.

November is a month of transition. The birds of summer have all “flown the coop,” returning to warmer climes to the south in Central and South America, as well as the Caribbean. Of course, even as hummingbirds, warblers, tanagers, vireos, and others have fled North America in advance of winter’s imminent arrival, other birds are arriving to take their place.

Many of the newcomers don’t offer the vibrant plumage of a scarlet tanager or a rose-breasted grosbeak, but they make up for the lack of striking feathers by remaining quite faithful to our feeders during the bleak, short days of winter. A hermit thrush and a dark-eyed junco represented some first-of-autumn arrivals when they showed up Nov. 6, followed the next day by a swamp sparrow. In addition to the sparrow, three ravenous common grackles descended on my suet feeders that same day.

For many bird enthusiasts, the “common” in this particular bird’s name is particularly apt. Tending to form large, noisy flocks, common grackles can easily wear out even the most generous welcome. Perhaps because I live at a mid-elevation area, common grackles are extremely infrequent visitors to my yard. I can be a little more welcoming to a bird that I know is not likely to linger.

Photo by diapicard/Pixabay.com • A common grackle perches on a shepherd’s hook in a garden. These large birds, which are part of the blackbird family, form flocks and bring big appetites to feeders during migratory stops.

Nevertheless, that same evening these three grackles must have spread the word because a flock of about 30 of these birds arrived. If I needed a reminder, the flock provided a quick one. A handful of grackles isn’t too disruptive, but a large flock can quickly overwhelm and intimidate smaller feeder birds.

Even so, I remain inclusive in my embrace of all feathered friends. A much maligned bird if ever there was one, the common grackle is worth a second look. For those who are able to overlook the occasional bad habits of birds such as Northern mockingbirds, mourning doves, or even cantankerous ruby-throated hummingbirds, there may be hope for this large member of the diverse family of blackbirds, known by scientific types as a member of the family Icteridae. This grouping of New World species, also known as New World blackbirds, includes such members as orioles, meadowlarks, cowbirds, bobolinks, marshbirds, orependolas, caciques and, of course, blackbirds.

Photo by Bryan Stevens • A boat-tailed grackle sings, if the bird’s harsh, grating notes can be considered a song, from a perch in a wetland in South Carolina.

The common grackle is known by the scientific name Quiscalus quiscula. In the southeast, in particular along the coast and in wetland areas, a common and related species is the boat-tailed grackle. Other species of grackles found in the New World include the great-tailed grackle, Nicaraguan grackle, Great Antillean grackle and the Carib grackle. A little more distantly related are the South American species golden-tufted mountain grackle and the Colombian mountain grackle.

One species — the slender-billed grackle of Mexico — suffered extinction at the dawn of the 20th century. Reasons for this bird’s disappearance are not clearly understood, but habitat destruction of Mexican wetlands and hunting pressures have been theorized as causes. Like others of its kind, the slender-billed grackle may also have been persecuted as an agricultural pest.

Like many other birds dependent on wetlands, common grackles have experienced population declines in recent decades. Although it seems odd to refer to a bird with a population estimated at around 73 million individuals in North America as on the decline, common grackles have suffered an estimated population loss of about 60 percent from historic highs.

Male grackles stand out from other blackbirds due to their sheer size. Males can reach a length of 13 inches, although much of that can be measured in an exceptionally long tail. A grackle’s plumage has a black sheen that can shine with brilliant iridescence that tends to appear purple, green or blue when the sun shines just right on the feathers. Females tend to be smaller than males and are a muted black and brown. Both sexes have long, sturdy bills and yellow eyes.

Most rural residents don’t have to worry about common grackles overwhelming their feeders, but some people living in urban and suburban settings have found grackles to be difficult guests. The birds have bottomless appetites and are aggressive toward more desirable feeder birds. Fortunately, migrating flocks in the fall tend not to linger. After a brief visit, which can still deplete supplies of seed and suet cakes, the grackles continue migrating.

Grackles are usually one of the earliest birds to return each spring. In fact, it’s not at all unusual for these large birds to make their way back to the region as early as late February. I am usually glad to welcome them back since I know that their return is a strong indication that some more favored species are certain to follow in their wake and that winter’s grip is waning.

Are you seeing new arrivals in your yard or at your feeders? Let me know by emailing ahoodedwarbler@aol.com.

Photo by Bryan Stevens • Boat-tailed grackles perch on viewing equipment at an observation platform at Huntington Beach State Park in South Carolina.

Club holds 51st annual Fall Bird Count

Photo by NatureLady/Pixabay.com • Northern flickers made a strong showing on the 51st consecutive Fall Bird Count. Eighty of these woodpeckers were found by count participants spread across the five-county area of Northeast Tennessee.

The 51st  consecutive Elizabethton Fall Count was held on Saturday, Sept. 26, with 48 observers in 18 parties. The participants were dispersed more than normal due to social distancing protocols. This is the third seasonal count conducted since the start of the Covid 19 pandemic.

The area covered included all of Carter County, as well as parts of the adjacent counties of Johnson, Sullivan, Unicoi and Washington.

A total of 132 species were tallied, which is above the recent 30-year average of 125 species. The all-time high on this count was 137 species set in 1993.

Photo by U.S. FWS   Many birds, such as Northern bobwhites, have seen alarming population crashes in the last half century.

Some interesting finds included a Northern bobwhite covey near the community of Bowmantown in Washington County. Such high numbers of bobwhites have become increasingly rare in recent years.Thirteen unidentified species of Empidonax flycatchers were found, but these birds do not count into the total of species. These small flycatchers are so similar in appearance that their song is usually needed to confirm identification. In fall migration, however, these flycatcher go silent for the most part. A yellow-bellied flycatcher and two least flycatchers were identified.

A total of 23 species of warblers were found, including such interesting finds as golden-winged warbler, blackpoll warbler and Wilson’s warbler.

European starling proved the most abundant bird with 1,757b individuals counted. Other common birds for the count included Canada goose (1,220), Rock Pigeon (629) and Chimney Swift (478).

Photo by Jean Potter • The rock pigeon is one of the most successful members of the bird family Columbidae, which is comprised of some 310 species of doves and pigeons. One of the most famous representatives of the family is the dodo, an extinct relative of such common birds as the mourning dove and rock pigeon.

The participants for the 2020 Fall Bird Count included: Fred Alsop, Rob Armistead, Betty Bailey, Gary Bailey, Jerry Bevins, Rob Biller, Debi Campbell, J.G. Campbell, Ron Carrico, Robin Cooper, Catherine Cummins, Dianne Draper, Glen Eller, Harry Lee Farthing, Bambi Fincher, Dave Gardner, Tammy Griffey, Bill Grigsby, Jean Henson, Neal Henson, Jacki Hinshaw, Don Holt, David Kirschke, Rick Knight, Roy Knispel, Richard Lewis, Dianna Lynne, Vern Maddux, Joe McGuiness, Cathy McNeil, Tom McNeil, Eric Middlemas, Harry Norman, Susan Peters, Brookie Potter, Jean Potter, Sherrie Quillen, Pete Range, Ken Rea, Judith Reid, Judi Sawyer, Chris Soto, Michele Sparks, Bryan Stevens, Kim Stroud, Scott Turner, Charles Warden, Joyce Watson; plus Connie Irick, David Irick, and Peggy Stevens as feeder watchers.

There were no glaring misses, but shorebirds were scarce with not much available habitat this year. Birds that might have been expected for a fall count but were not found included Loggerhead Shrike, Winter Wren, Yellow-rumped Warbler, Savannah Sparrow, Blue Grosbeak and Bobolink.

“All in all, it was a very good count,” said long-time compiler Rick Knight. “Thanks to all who participated.”

The list:

Canada Goose, 1,220; Wood Duck, 71; Mallard, 219; Blue-winged Teal, 27, Northern Bobwhite, 10; Ruffed Grouse, 2; and Wild Turkey, 66.

Common Loon, 1; Pied-billed Grebe, 11; Double-crested Cormorant, 62; Great Blue Heron, 37; Great Egret, 5; Green Heron  4; Black-crowned Night-Heron, 2; and Yellow-crowned Night-Heron, 1.

Black Vulture, 141; Turkey Vulture, 191; Osprey, 14; Northern Harrier, 1; Sharp-shinned Hawk, 3; Cooper’s Hawk, 11; Bald Eagle, 15; Red-shouldered Hawk, 2; Broad-winged Hawk, 4; and Red-tailed Hawk, 14.

Killdeer, 54; Greater Yellowlegs, 1; American Woodcock, 1; Caspian Tern, 3; Rock Pigeon, 629; Eurasian Collared-Dove, 11; and Mourning Dove, 355.

Yellow-billed Cuckoo, 4; Eastern Screech-Owl, 28; Great Horned Owl, 2; Barred Owl, 6; Northern Saw-whet Owl, 1; and Common Nighthawk, 46.

Chimney Swift, 478; Ruby-throated Hummingbird, 34; Belted Kingfisher, 29; Red-headed Woodpecker, 2; Red-bellied Woodpecker, 103; Yellow-bellied Sapsucker,  6; Downy Woodpecker, 82; Hairy Woodpecker, 18; Northern Flicker, 80; and Pileated Woodpecker, 36.

American Kestrel, 17; Merlin, 2; Peregrine Falcon, 1; Eastern Wood-Pewee, 34; Yellow-bellied Flycatcher, 1; Least Flycatcher, 2; Empidonax species, 13; Eastern Phoebe, 124; and Eastern Kingbird, 4.

White-eyed Vireo, 3; Yellow-throated Vireo, 5; Blue-headed Vireo, 16; Warbling Vireo, 1; Philadelphia Vireo, 1; Red-eyed Vireo, 34; Blue Jay, 578; American Crow, 503; Common Raven, 14.

Tree Swallow, 274; Barn Swallow, 15; Carolina Chickadee,  251; Tufted Titmouse, 208; Red-breasted Nuthatch, 18; White-breasted Nuthatch, 80; and Brown Creeper, 1.

House Wren, 10; Carolina Wren, 285; Blue-gray Gnatcatcher, 10; Golden-crowned Kinglet, 7; and Ruby-crowned Kinglet.

Eastern Bluebird, 246; Veery, 3; Gray-cheeked Thrush, 10; Swainson’s Thrush, 193; Hermit Thrush, 1; Wood Thrush, 19; American Robin,  574; Gray Catbird,  85; Brown Thrasher, 27; Northern Mockingbird, 126; European Starling, 1,757; American Pipit, 2; and Cedar Waxwing, 312.

Ovenbird, 2; Northern Waterthrush, 12; Golden-winged warbler, 1; Black-and-white warbler, 2; Tennessee warbler, 52; Common Yellowthroat, 32; Hooded warbler, 9; American Redstart, 90; Cape May Warbler, 32; Northern Parula,12; Magnolia  warbler, 29; Bay-breasted warbler, 45; Blackburnian Warbler,16; Chestnut-sided warbler, 15; Blackpoll warbler, 3; Black-throated Blue  Warbler, 4; Palm warbler,  65; Pine warbler, 16; Yellow-throated warbler, 7; Prairie warbler, 2; Black-throated Green warbler, 18; Canada warbler,  2; and Wilson’s warbler,  2.

Eastern Towhee, 80; Chipping Sparrow,  41; Field Sparrow, 26; Song Sparrow, 116; Swamp Sparrow, 1; and Dark-eyed Junco, 26.

Summer Tanager,  3; Scarlet Tanager. 40; Northern Cardinal, 251; Rose-breasted Grosbeak, 119; and Indigo Bunting, 37.

Red-winged Blackbird, 209; Eastern Meadowlark,  17; Common Grackle,  54; Brown-headed Cowbird,  8; House Finch, 76; Pine Siskin, 4; American Goldfinch, 303; and House Sparrow, 18.

Two types of black-throated warblers number among New World bird family

Photo by Skeeze/Pixabay.com The female black-throated green warbler lacks the male’s all-black throat, but she is a striking bird in her own right. Black-throated green warblers and the related black-throated blue warbler are common birds in the Southern Appalachians from April to October.

I’ve enjoyed some lawn chair birding on recent September evenings, delighting in my observations of birds ranging from flycatchers and catbirds to warblers, vireos and hummingbirds. I enjoy my casual study of the daily changes in the bird population present in my yard and adjacent woods. The parade of warblers hasn’t been as productive as in past autumns, but I have managed to spot and identify hooded warbler, American redstart, chestnut-sided warbler, magnolia warbler, Northern parula, and black-throated green warbler visitors.


The black-throated green appeared suddenly in a fast-paced burst of foraging in a cherry tree. Alongside birds such as an Eastern wood-pewee and red-eyed vireo, the warbler gleaned the leaves of the trees for concealed caterpillars. I watched the bird swallow with gusto several of the caterpillars so skillfully plucked with its thin, pointed bill.

The black-throated green warbler and one other species, the black-throated blue warbler, share the appellation of “black-throated,” and rightfully so. Males in the spring look their best with a dark black throat in striking contrast to the rest of their plumage. The female black-throated green shows some black on the throat, but female black-throated blue warblers exhibit no black throat patch. In fact, black-throated blue males and females are extremely different in appearance. Scientists call such dramatic appearances differences “sexual dimorphism.” Among the warblers, this species provides the most striking example of sexual dimorphism of any of the warblers. The male and female do share one identifying mark — a white square near the outer edge of the middle of each wing. This square is usually more pronounced in the male, but it stands out enough that it helps distinguish the female black-throated blue from similar dull-plumaged birds such as vireos. 


German naturalist Johann Friedrich Gmelin described the black-throated blue warbler in 1789. I noted in last week’s column that Gmelin woefully misnamed such warblers as palm warbler and magnolia warbler. With the black-throated blue warbler, Gmelin did a better job. This bird’s scientific name name is the Latin term caerulescens, which translates into English as “turning blue.” The male is a stunning bird. Arguably, the black-throated blue warbler is one of the most distinctive members of the family of wood warblers. The adult male has a black face and cheeks, deep blue upperparts and a clean white underbelly. In contrast, the adult female is olive-brown above and light yellow below. 


When one’s binoculars first focus on a black-throated green warbler, the first impression is likely to be the black, yellow and white feathers in the bird’s plumage. The greenish-yellow coloration that gives this species part of its common name is mostly limited to the bird’s back, which is often not as evident when the bird’s being watched through binoculars.  
Both of the black-throated warblers nest in northeast Tennessee, western North Carolina, and southwestern Virginia. In the spring, the males of both these warblers are persistent singers from prominent perches in the green woodland canopy. Male black-throated greens contribute to the avian chorus by frequently singing a high-pitched song often described as a buzzy zee-zee-zee-zooo-zeet. Male black-throated blues produce a buzzy zee-zee-zeeee. 

The black-throated green warblers currently departing the region will likely travel as far as Mexico, Central America, the West Indies and southern Florida for the colder winter months. Black-throated blue warblers, on the other hand, migrate to the Caribbean for the winter, making their homes on Cuba, Jamaica, Hispaniola and Puerto Rico, as well as other islands. 
Nearly half of the world’s New World warblers spend the months between spring and fall in North America. The other half reside exclusively in Central and South Americas, as well as the Caribbean. Some of the more descriptively named individuals residing in the tropical areas south of North America include flame-throated warbler, crescent-chested warbler, arrowhead warbler, white-rimmed warbler, buff-rumped warbler, golden-bellied warbler, fan-tailed warbler, pink-headed warbler and pale-legged warbler. 


The warblers bring some exciting tropical flair into the hills and hollows of Southern Appalachia for several months every year. I miss them once they’re gone for the winter season, but the promise of their return keeps my spirits buoyed during the cold, darker months until spring. 

Nighthawks share the skies with many other migrants

Photo by Dr. Thomas G. Barnes/ USFWS • A common nighthawk perches on a low clump of vegetation during a rest period. Nighthawks are known for migrating in large flocks.

Autumn’s a chance for me to indulge my passion for warblers, with a few dozen species of these songbirds passing through the region in the span of a few weeks. They’re not the only migrating birds worth watching, however, as a recent Facebook post reminded me.

John Whinery, a fellow birder who resides in Fall Branch, Tennessee, reported some interesting observations Sept. 6 on Facebook.

“Been watching several hundred common nighthawks the last few nights fly down the valley next to the farm,” John wrote in his post. He also reported that he saw a female Northern harrier fly by at eye level about 20 feet from him as he watched the migrating nighthawks. The Northern harrier, once known as the “marsh hawk,” is one of many raptors known to migrate. 

Like such birds as warblers, vireos, thrushes, tanagers, flycatchers and hummingbirds, the common nighthawk, is a neotropical migrant. In addition, the common nighthawk has one of the longest migration routes of any North American bird. Twice a year, these birds migrate for distances ranging from 1,600 to 4,200 miles. Nighthawks that spend the spring and summer in Canada travel to southern South America for the winter months. 

With September advancing on the calendar, I have been keeping an eye on the treetops for passing warblers, vireos and tanagers, but I also remember to direct my gaze to the skies. Forgetting to look skyward could result in missing the passage of such varied migrants as chimney swifts, broad-winged hawks and common nighthawks.

So, what is a common nighthawk? First, this bird, despite what is implied by its name, is not a hawk. It’s also not strictly nocturnal. Particularly in the fall, nighthawks are active during daylight hours when engaged in catching winged insects. Outside of fall migration, these birds can often be observed over large parking lots or well-lit streets, snatching up insects swarming around the light poles.

The common nighthawk is one of three members of the nightjar family found in the region during the summer months. The other two nightjars are the whip-poor-will and chuck-will’s-widow, birds that produce their namesake vocalizations in the nocturnal hours. Both of these species migrate, but they don’t take the dramatic approach employed by nighthawks. Each fall, common nighthawks form large flocks, ranging in size from dozens to hundreds or even thousands of individuals, as they migrate south for the winter.

Photo by Skeeze/Pixabay.com • A common nighthawk chooses a perch atop a fence post for a survey of its surroundings.

Unlike whips and chucks, the common nighthawk isn’t active only after dark, which makes it much easier to observe these birds. They look somewhat like swifts and swallows but are much larger. They are brownish-gray birds with pointed wings and forked tails. They are easily identified by distinctive white patches on the underside of their wings.

The nightjar, or Caprimulgidae, family of birds is also sometimes known as “goatsuckers.” Apparently, in trying to explain the nocturnal tendencies of these birds, the Greeks came up with the imaginative but erroneous idea that birds like nighthawks liked to sneak into barns and have a meal of fresh goat’s milk. In reality, nighthawks feed almost exclusively on insects, including ants, wasps, beetles, caddisflies, moths, mayflies, flies, crickets, grasshoppers, and other insects. They capture much of their insect prey on the wing.

There are almost 80 species of nightjars in the world. Less than 10 occur in North America. Many of the common nighthawk’s relatives have been given descriptive names, such as long-trained nightjar, collared nightjar, spot-tailed nightjar, red-necked nightjar, golden nightjar, fiery-necked nightjar, swamp nightjar, pennant-winged nightjar, lyre-tailed nightjar, little nightjar, sickle-winged nightjar, rufous-bellied nighthawk, short-tailed nighthawk, sand-coloured nighthawk and least nighthawk.

So, keep looking skyward. The next flock of migrating common nighthawks may fly over your home. These flocks are usually on the move throughout September.  I’ve managed only three sightings of solitary nighthawks so far this migration season, which falls far short of the number John Whinery reported at his farm. 

I will keep watching the skies. Nighthawks can also appear almost magically, as if out of thin air. First, observers may see one of two birds, then several, followed quickly by dozens or sometimes hundreds as they wheel and cavort in the skies overhead with impressive grace and agility. I’ve seen flocks that would easily number more than 500 birds in locations throughout the region, although flocks often number only a couple of dozen birds. 

Photo by Jean Potter • A common nighthawk rests on a metal railing.

Warbler parade imminent as September advances

Photo by Mickey Estes/Pixabay.com • A pine warbler takes a brief rest on a perch during a break from foraging for insects.

I detected some signs of migration during a backyard lawn chair birding session on Thursday, Sept. 3. A croaking great blue heron circling the property, the shrill cries of cedar waxwings, scolding vireos, and the intermittent buzz of hummingbird wings all contributed to the background noise. 

The first warbler of the season, a quick blur of yellow and white, disappeared into the green and thus escaped identification. That’s the way of it: Sometimes, you identify the bird, but at other times it slips past without lingering enough for that moment of confidence. You have to love September, even if the birds are entirely ignorant of pages on a calendar. As summer wanes, the pace of migration has spiked. If that first warbler got away, I know others will follow behind it.

Some of them will have fanciful names like blue-winged warbler, black-throated blue warbler, Blackburnian warbler and American redstart. Each of the warblers exists as a sort of magnet to induce me to keep binoculars always close at hand.

 

The 50 or so species of warblers that make their home in the eastern parts of the United States and Canada during the spring and summer months are now winging their way south.  The blackpoll warbler, which holds the distinction for the longest migration of any species of New World warbler, will journey from the forests of Canada to spend the colder months in northern South America. Because of a peculiarity of this bird’s fall migratory habits, birders in Northeast Tennessee are far more likely to see this late-arriving warbler in May than in the autumn.

A few warblers — pine warbler, magnolia warbler and palm warbler — are named for trees for the simple reason that their European discoverers happened to first observe them in the branches of their namesake trees.

Photo by Bryan Stevens • A Palm Warbler forages along a chain-link fence.

For most of these warblers named to honor various trees,  their common names are, at best, a misnomer. Throughout most of its life, the palm warbler doesn’t even encounter palm trees. Johann Friedrich Gmelin, a German naturalist who lived from 1748 to 1804, saddled the palm warbler with its inappropriate name. Gmelin based his naming of the bird on the fact that a specimen had been collected on Hispaniola, an island in the Caribbean with an abundance of palm trees. Gmelin published several textbooks in the fields of chemistry, pharmaceutical science, mineralogy, and botany. He also had a hand in publishing a catalog of scientific names for various species, including some birds that had until that point never been given a species classification. Thanks to his efforts, the palm warbler has forever been linked with a type of tree that is, at best, entirely incidental to the bird’s life cycle.

The same is true for the Magnolia Warbler, which would have been more suitably named the spruce or fir Warbler, as the species is highly dependent on northern coniferous forests as nesting habitat. The pine warbler, at least, restores credibility to some of the early experts who have these tiny birds their common names. The pine warbler does indeed prefer stands of pine trees, showing particular favor for pitch pines.

Photo by Bryan Stevens A Yellow-throated Warbler makes a migratory stop in my yard on the first day of September.

These three “tree warblers” are all fairly common fall migrants, making stops in gardens, backyards and woodland edges throughout Northeast Tennessee, southwest Virginia, and western North Carolina. They and their relatives will make the remaining weeks of September and early October an exciting time for warbler enthusiasts. 

 

Arctic tern migratory champion among world’s birds

September’s arrival puts fall migration into overdrive. The birds that returned this past spring — the warblers, vireos, tanagers, grosbeaks, flycatchers and hummingbirds — have begun or are beginning to make their way back to the locations where they will spend the winter months far from the cold, bleak conditions over most of North America.

Photo by Jonathan Cannon/Pixabay.com • The Arctic tern outdoes all other birds when it comes to migration. These seabirds journey from their Arctic nesting grounds to spend the winter around the Antarctic, a journey of some 50,000 miles a year.

Some of these birds migrate out of the tropics to avoid competition. Others find North America a land of abundant, albeit temporary, resources. This land of plenty offers a wealth of insects, seeds, fruit and other nourishing, nutritious food to help parent birds keep their strength while they work to ensure their young thrive. Of course, once the bountiful period concludes, they return to the tropics of Central and South America to winter. Those that do so successfully will make the journey back to the United States and Canada in the spring.

The phenomenon of migration isn’t exclusive to the neotropical migrants of the New World. Birds in other parts of the world migrate, too. Waterfowl, shorebirds and raptors are among some of the families of birds that stage impressive migrations.

Photo by Bryan Stevens • A female scarlet tanager is a study in contrast from her mate with her dull greenish-yellow plumage being much less vibrant than the male’s bright red and black feathers.

The Arctic tern, for example, truly takes migration to extremes. This small seabird travels each year from its Arctic nesting grounds to the Antarctic region, where it spends the winter months. Put into terms of mileage, the Arctic tern can travel about 50,000 miles in a single year. For a bird with a body length of about 15 inches and a wingspan of about 28 inches, this incredible migration is an astonishing feat. These statistics permit the Arctic tern to easily lay claim to the title of champion migrant among our feathered friends.

According to the website for National Geographic, Arctic terns face a serious threat from climate change. In a profile on the tern at its website, National Geographic warns that Arctic terns are projected to lose 20 to 50 percent of their habitat due to the temperature changes linked to climate change. They also face loss of habitat due to encroachment by human activities such as oil drilling.

The ruby-throated hummingbird, a favorite of many bird enthusiasts living in the eastern United States, makes an impressive migration each year. Just to reach the United States, these tiny birds undertake a strenuous journey. They leave their wintering grounds in Central America to return to the United States and Canada for the nesting season. Most of these tiny birds, which are barely four inches long, make a non-stop flight of more than 500 miles across the Gulf of Mexico. The journey can take almost an entire day. With the end of summer, the entire population of ruby-throated hummingbirds, increased by a new generation of young birds, makes the Gulf crossing for a second time in a year to return to the American tropics for the winter months.

Photo by Bryan Stevens • A ruby-throated hummingbird visits a feeder for a sip of sugar water.

Among North America’s buteo hawks, which includes raptors such as red-shouldered hawk and red-tailed hawk, the broad-winged hawk stands out as a dedicated migrant. These hawks form flocks that at times number in the hundreds or thousands as they sail and glide on thermals rising over various mountain ranges. These hawks and other raptors are well-known in the region for migrating past the Mendota Fire Tower in Southwest Virginia every September and early October.

The broad-winged hawk’s counterpart in the western United States is Swainson’s hawk, which shares the broad-winged hawk’s inclination for migrating in large flocks. Swainson’s hawk is named for William John Swainson, the famous 19th century English naturalist for which Swainson’s thrush is also named.

The hooded warbler, my favorite member of the migratory New World warblers, migrates back to Mexico and Central America for the winter months after nesting during the spring and summer in a range concentrated in the southeastern United States. The males, after going quiet in late summer, have started singing on occasion from the shaded woods around my house. I think this has more to do with restlessness as they prepare for to depart on a migration flight that will take them to the balmy Caribbean, Mexico and Central America while we shiver through the months between October and April. It’s not a migration of an incredible distance, but it’s still quite an accomplishment for a bird only five inches long and weighing less than half an ounce.

Photo by Jean Potter • A male hooded warbler flits through the foliage of a rhododendron thicket.

Fall’s a great time to witness the variety of avian life. Look for some of these migrants passing through your yards, gardens or favorite birding spots.

 

 

 

Green herons, one of the smaller wading birds, often overlooked as they lurk near water’s edge

Photo by Bryan Stevens • A Green Heron elevates a shaggy crest of feathers, a behavior often initiated when the bird feels alarmed.

Byron Tucker and Ricky Dunklin, friends from Atlanta, contacted me on Facebook to ask if I could help identify a bird they had photographed during a trip to Sunset Beach in North Carolina in early August. When I saw the photographs I recognized that the visitor to a small dock at their vacation spot was a green heron.

Photo Contributed by Byron Tucker/Ricky Dunklin • A Green Heron visits a dock at Sunset Beach in North Carolina.

Green herons are not restricted to coastal areas, but it was still somewhat unexpected when I stepped onto my front porch on Aug. 19 and saw a green heron flying at treetop level. I suspect the bird had been perched in one of the tall trees on the ridge behind my house. The slamming of my front door probably spooked the bird into flight.

Green herons and other wading birds are usually quite abundant in wetlands across the country in late summer. The scientific name — Butorides virescens – of this bird comes from a mix of Middle English and Ancient Greek and roughly translates as “greenish bittern.”

Photo by Bryan Stevens • A Green Heron grasps a perch overlooking a small creek in Erwin, Tennessee.

There are only two other species in the genus Butorides — the lava heron, which occurs on some of the Galapagos Islands of Ecuador, and the striated heron, which is found in wetlands throughout the Old World tropics from West Africa to Japan and Australia. This heron, which is also known as the mangrove heron, also occurs in South America.

The green in the bird’s plumage appears as a dark green cap, as well as a greenish back and wings. Adult birds also have chestnut-colored neck feathers and a line of white feathers along the throat and belly. These herons often assume a hunched position, which can make them look smaller than they actually are.

It’s been a good summer for wading birds. In addition to the green heron, a great blue heron has been lurking in the creek in front of my home and at my fish pond. Much larger than the green heron, the great blue heron has not escaped the notice of a local flock of American crows. The crows harass the heron whenever the larger bird takes flight.

On the first day of August, I stopped with my mom at the pond at Erwin Fishery Park. We were treated with an observation of a great egret fishing along the edges of the pond. Egrets and herons are known for wandering outside their normal range in late summer after the nesting season has concluded.

Photo by Bryan Stevens • A young Green Heron rests at the edge of a pond.

Keep alert when walking along the trails in Erwin, Tennessee, and you may catch sight of one of these interesting herons or egrets, too. The edges of the fish pond at Erwin Fishery Park is also a reliable haunt for green herons. Farm ponds in the countryside around Jonesborough, Tennessee, as well as wetland habitat around the town’s Persimmon Ridge Park, are also good places to look for this small heron. The wetlands at Sugar Hollow Park in Bristol, Virginia, is another dependable location for seeing this small heron. Most green herons will depart in late September and early October. This small heron retreats from the United States during the winter season but will return next spring in April and May.

Photo by Bryan Stevens • Green herons are short, stocky herons that can assume some comical poses.

The green heron’s range during the nesting season includes Canada and much of the United States. Green herons will sometimes form loose nesting colonies, but at other times a pair will choose a secluded location as a nest site. The female will usually lay from three to five eggs. Snakes, raccoons and other birds such as crows and grackles are potential threats to eggs.

For the most part, the population migrates to Central and South America for the winter months. A few herons — great blue heron and black-crowned night heron — remain in the region throughout the year, even enduring the cold winter months in Northeast Tennessee, Southwest Virginia and Western North Carolina.

These herons are probably more common than we realize. They are skilled at blending with their surroundings, but sharp eyes can find these herons around almost any body of water, whether it is pond, marsh, river, creek or lake.

They usually depart the region in October, so the remaining days of August and September provide opportunities to observe both resident green herons and their migrating kin.

Photo by Bryan Stevens • A Green Heron finesses a captured tadpole in its bill.

Flocks of red-winged blackbirds, other sightings, could signal winter’s end

Photo by JudaM/Pixabay.com • Feeders are a good way to tempt red-winged blackbirds closer for great views. Males are exceptional in their glossy black plumage with red wing patches accented by a hint of yellow. Females are brown and striped, giving them a similar appearance to large sparrows.

 

H. Lea Jones, Jr. of Bristol, Virginia, wrote to me after seeing my post about pileated woodpeckers a few weeks ago.

“I read with interested your story about this woodpecker,” Lea wrote in an email. “I have been keeping up feeding the birds, which both of my now deceased parents loved to watch, outside the large kitchen windows of their home which I inherited. One day, a couple of years back, while manning the chair and watching the birds, I was startled to see two of these woodpeckers hanging from my extra large suet cage. There was one on each side. Maybe a male and a female?”

Photo by Mike Dobe/Pixabay.com • A pileated woodpecker visits a suet feeder.

Lea noted that the two woodpeckers stayed at the suet for maybe 30 seconds. “I was shocked to see these huge birds and only could assume, at the time, they were woodpeckers. Just very beautiful birds!”

After a little research, Lea discovered the identity of the visitors. “And now I know the ‘sound’ in the wooded area behind the house,” Lea wrote. I had also described the sound in my post.

“Nothing like it I’d ever heard before,” Lea wrote. “Since reading your article, I now realize what a rare sight I have been blessed with. It was truly an amazing sight indeed.”

Dr. John Brenner sent me an email recently about an unexpected sighting at his home in Abingdon, Virginia, on Thursday, Feb. 13, around 5 p.m.

“I saw a Baltimore oriole in my back yard,” he reported. “It was sitting on a fence then flew over to my feeders where it walked around under them.”

He explained that he lives in the heart of Abingdon and has been living at his current address for about three and a half years. “This is the first time I have seen this bird,” he said. “I thought it was unusual.”

Photo by USFWS • Baltimore orioles, like this male, are members of the blackbird family, making them relatives of species such as Eastern meadowlarks, brown-headed cowbirds, common grackles and red-winged blackbirds.

Winter sightings of orioles are rather unusual, but they are not unheard of. The North Carolina Birds website details the emerging phenomenon of wintering orioles.

“Until the 1960s, it (Baltimore oriole) essentially did not winter in the United States, but with milder winters and people putting out oranges and peanut butter on their feeders, and not just various seeds and suet, a number of orioles started wintering from North Carolina to Florida,” according to a profile of the species. Straying into Virginia would certainly not be out of the question, although Baltimore orioles are usually expected in southwest Virginia and Northeast Tennessee from April to October.

In the last couple of weeks, large flocks of red-winged blackbirds have been making stops at my home. The largest flock numbered about 50 individual birds. Red-winged blackbirds are often considered harbingers of spring, but these birds arrived with some of the recent wintry weather that arrived in February.

Photo by Bryan Stevens • A male red-winged blackbird sings to attract mates and ward off rivals.

I’ve long associated red-winged blackbirds with early spring. I also had a single red-winged blackbird make a one-day visit earlier in February during a snowstorm. Those February visitors are the vanguard of large numbers of red-winged blackbirds that return in impressive numbers every March. The blackbirds arriving now behave much differently than the quiet, shy ones that often make brief visits to feeders during late winter snowstorms.

The showy and loud red-winged blackbirds made themselves at home at my fish pond and adjacent stands of cattails, producing quite a commotion. “The kon-ke-ree song of the male red-winged blackbird is a sure indication that spring is on the way,” according to a profile of the species located at the Tennessee Watchable Wildlife website. At this time of year, the male red-winged blackbirds seek elevated perches to display and vocalize.

The male red-winged blackbirds is a very aptly named bird. Glossy black males sport red wing patches that are often trimmed with a narrow band of yellow feathers. By contrast, female red-winged blackbirds are mostly brown birds that could easily be mistaken for large sparrows. Both sexes have sharply pointed bills.

Photo by Bryan Stevens • Red-winged blackbirds arrive as a noisy flock on a wintry February evening.

After I posted on Facebook about the sightings of the red-winged blackbird flocks, Rita Schuettler, a fan of these birds and a resident of Elizabethton, Tennessee, asked whether these flocks were unseasonably early.

Photo by Lintow/Pixabay.com • Female red-winged blackbirds could easily be mistaken for a large sparrow.

I told Rita in a subsequent post that a friend in Atlanta has informed me that he began seeing the blackbird flocks in his neighborhood a couple of weeks ago. So they are right on time for make their appearance in Northeast Tennessee. Laura Evans Barden also posted on my Facebook page that she has been seeing red-winged blackbirds in recent weeks, as well as more common grackles and European starlings.

Red-winged blackbirds are fond of wetlands. Any marsh, damp field or flooded pasture is likely to attract a few resident red-winged blackbirds. Females choose nesting locations in cattails or other marsh vegetation. She usually lays three or four eggs. Although she does receive some help from the male, most of the responsibility for raising the young is left to her.

There is a reason that male red-winged blackbirds are not always quite as engaged in feeding and tending their young. Male red-winged blackbirds are often polygynous, which means that males will often court multiple mates. His time is often occupied defending females and their respective nests from the advances of other male red-winged blackbirds.

Other relatives of the red-winged blackbird in the United States include the tricolored blackbird found along the Pacific Coast and the yellow-headed blackbird resident in wetlands west of the Great Lakes. Rusty blackbird, common grackle and brown-headed cowbird are other species of blackbirds found in Tennessee, Virginia and North Carolina.

Photo by Bryan Stevens  • This yellow-headed blackbird was photographed at Antelope Island State Park in Utah in 2006.

Success of wild turkey’s resurgence leads to foul fowls in New England

Photo by Avia5/Pixabay.com • A male wild turkey, often referred to as a “tom” or a “gobbler,” fans his tail in a display meant to impress hens and intimidate other males.

Celebrated in William Bradford’s written account of the First Thanksgiving in 1621, the wild turkey had all but vanished from Massachusetts and the rest of New England a mere two centuries later. By the time of Henry David Thoreau, who is arguably America’s first environmentalist, the noted author lamented in 1856 that the turkey and other wildlife were difficult to find in his native Massachusetts.

In a journal entry from the spring of 1856, Thoreau decried the part the descendants of those Pilgrims who celebrated the first Thanksgiving more than 200 years earlier had played in the decimation.

“When I consider that the nobler animals have been exterminated here — the cougar, the panther, lynx, wolverine, wolf, bear, moose, dear, the beaver, the turkey and so forth and so forth, I cannot but feel as if I lived in a tamed and, as it were, emasculated country,” Thoreau wrote in his journal. “Is it not a maimed and imperfect nature I am conversing with?”

Henry David Thoreau

Perhaps, but Thoreau would probably be encouraged that many of the animals he mentioned in his journal have now recovered and once again roam throughout New England. The wild turkey has been in the vanguard of that resurgence. In fact, the revival of the wild turkey’s fortunes in New England has had unintended consequences. In short, this venerable fowl has run amok in some parts of its former stronghold.

An article by Brianna Abbott for the Audubon Society’s website estimates that before Europeans first colonized New England in the 1600s, as many as 10 million wild turkeys roamed from Maine to Florida to the Rocky Mountains of the American West.

Today, wild turkeys are back with a vengeance. Turkeys may have grievances, it turns out, for the persecution they suffered at the hands of Americans for the past few centuries. Touted as a major restoration success story, the wild turkey began to be reintroduced to New England about half a century ago.

Now that they’re back, turkeys are part of a dramatically changed landscape. Suburbs now stretch in wide swaths of terrain that once supported forests and associated wildlife. Luckily — for the turkey, anyway — it is a very adaptable bird. Turkeys have taken to life in the suburbs with such enthusiasm that they are now a wildlife management issue for the human residents who must share living space with them. Emboldened problem turkeys chase and intimidate women and small children, as well as pets. Whole flocks have gone rogue.

Photo by Bryan Stevens • Wild turkeys forage on a hillside.

Gone are the turkey’s natural predators — lynxes, cougars and wolves — that had kept America’s premier game bird’s population in balance. As Thoreau pointed out, nature is no longer perfect. More than 170,000 wild turkeys now live in New England and they’re not always at peace with their human neighbors.

Thoreau didn’t have the benefit of environmental science to back him up, but he would probably not be surprised that a “maimed” nature is causing some unexpected problems even as some of the animals he so sorely missed are returning to their former haunts.

The Tennessee Watchable Wildlife Website notes that the wild turkey was once nearly eliminated from the Volunteer State. By the early 1900s, over-hunting eliminated this species from most of its range, including much of Tennessee. Modern wildlife management has reestablished this bird throughout its historic range and into 49 of the 50 United States.

Photo by Bryan Stevens • Wild turkeys have re-established themselves in many areas across the United States, including New England.

According to the website, the natural habitat for the wild turkey consists of mature woodlands with scattered openings or fields. In such areas, turkeys can forage for food such as acorns and other wild nuts, seeds, fruits, insects, buds, fern fronds and even the occasional salamander.

Wild turkeys roam the woods around my home, and I know of other areas that are dependable locations for observing these birds. While their numbers are increasing, the wild turkey has not yet turned the tables. For the foreseeable future, I suspect Americans will continue to dine on turkey every Thanksgiving, and not the other way around.

Who could blame them, however, if turkeys were to feel perfectly justified in biting back at the American public? We’ve not always been the best stewards for our native wildlife. Call me an optimist. I believe turkeys and people can co-exist. As residents in New England have learned, we just have to be prepared for some give and take.

Photo by Bryan Stevens • A male gobbler seeks the attention of hens, as all these Wild Turkeys add to the number of this species found during the count.

Mysterious owl retains a low profile even during Halloween season

Photo by jeanvdmeulen/Pixabay.com • The barn owl’s heart-shaped face helps this bird, which is also known by such names as death owl, ghost owl, and hobgoblin owl, stand out from the other owls that share the domain of night.

With common names such as cave owl, death owl, ghost owl, night owl and hobgoblin owl, the nocturnal hunter more widely known as the barn owl provides a fitting focus for exploration as the calendar counts down toward Halloween.

Barn owls lurk in the shadows of night, but most people would never know it unless they happen to hear some of the spine-tingling vocalizations produced by this poorly known predatory bird. Shiver-inducing shrieks and screams quite capable of piercing the veil of darkness are often produced by the barn owl. This owl doesn’t utter loud hoots like the great horned owl. Instead, the call of the barn owl is not likely one to be soon forgotten because of its raspy, nails-on-the-chalkboard nature. A hearer could easily be misled into misinterpreting the shrill vocalizations as originating from something far more ghoulish.

According to the website for the Owl Research Institute in Charlo, Montana, barn owls are the most widely distributed owl in the world, and they may be one of the most common, as well. In Montana, where ORI is located, barn owls observations are rather sparse. ORI has documented 12 barn owl nests and made numerous observations in the last 12 years, according to its website. Likewise, the barn owl is not too often observed in Northeast Tennessee and Southwest Virginia.

Photo by dannymoore1973/Pixabay.com A barn owl’s wings and feathers provide almost silent flight for this efficient predatory bird.

The barn owl is often associated with rural, agricultural areas, which is one reason they can often be found in old barns, sheds and farm silos. However, the first barn owl I ever saw in the wild was living beneath the eaves of a building on the campus of Mountain Home Veterans Administration in Johnson City, Tennessee, within walking distance of commercial buildings and the campus of East Tennessee State University.

The barn owl has no close relatives among the other owls found in the region. The barn owl is in its own unique family known as Tytonidae. The family name comes from a Greek word, Tuto, which translates as “night owl.”

Photo by Bryan Stevens • An Eastern Screech Owl, pictured, is considered a member of the family called Strigidae, which consists of the owls described as “typical owls” by experts.

Other owls in our region — great horned owl, barred owl, Eastern screech-owl, short-eared owl— belong to a family called Strigidae, which are often described as “typical owls” by ornithologists and other experts.

The barn owl is one of nature’s most perfect predators. Among animals tested by scientists, the barn owl shows an almost uncanny ability to detect prey animals by sound alone. Prey, which is often small voles or other rodents, often doesn’t know of the danger until it’s too late. The structure of the barn owl’s wings and feathers is such that these predatory birds can fly through the darkness in almost perfect silence.

Early American painter John James Audubon captured this dynamic scene of barn owls with a capture chipmunk.

There’s a heavy cost that the owl must pay for these special adaptations. According to the Barn Owl Trust, an organization founded in 1988 in the United Kingdom to conserve one of the most beautiful birds on Earth, a barn owl’s specially adapted feathers are not particularly waterproof. In addition, barn owls are unable to store a lot of body fat. The Trust’s website notes that barn owls are unable to hunt in heavy rain and are particularly prone to starvation during prolonged periods of severe weather and/or prey shortage.

Much myth and legend have arisen around the world’s owls, including the barn owl. A native tribe in California known as the Newuks believed that warriors who proved courageous and virtuous became great horned owls after death. Men who practiced wicked ways, however, were thought to become barn owls.

This owl with the white heart-shaped face has long spooked humans. The bird’s head and upper body typically vary between pale brown and various shade of gray. Especially in flight, the barn owl can look rather pale.

The barn owl is the most widespread terrestrial bird species in the world, occurring on every continent except Antarctica. In addition to its various spooky common names, barn owls are also known by such descriptive monikers as monkey-faced owl, silver owl and golden owl. Some other common names include church owl and steeple owl. This owl acquired this name for its habit of utilizing steeples or bell towers in churches as roosting locations when barns or caves were lacking.

For a bird so closely associated with people and their dwellings and related structures, the barn owl remains an enigma to many. YouTube offers a variety of videos that showcase the creepy vocalizations of barn owls. Familiarize yourself with their calls, and you’ll be more likely to distinguish a barn owl calling after dark from the more sinister specters on the prowl this Halloween.

To learn more about barn owls or to make a contribution toward their conservation, visit www.barnowltrust.org.uk

Photo by mochawalk/Pixabay.com • A barn owl gives a penetrating stare to the camera.