Monthly Archives: July 2024

Goldfinches much more than another pretty bird

Miles Moody from Pixabay • A male American goldfinch in summer nesting plumage is one of the region’s most vibrant songbirds. 

Johnson City resident Jo Wheeler posted a comment on Facebook on July 15 under a weekly posting promoting the “Feathered Friends” weekly column.

“We saw the American goldfinch in out backyard over the weekend,” Jo wrote. “It was amazing.”

I was so pleased to hear Jo’s excitement about the goldfinch. The American goldfinch is a commonplace bird, but once you take a close look at this bird it’s readily apparent that there’s really noting common about it at all. 

Goldfinches are extraordinary in appearance, particularly at this time of the year. The plumage of the male goldfinch during the nesting season is a bold pattern of black and white against a backdrop of golden-yellow feathers. These birds also form fussy but sociable flocks that congregate at bird feeders or bird baths in many a backyard. 

A sighting of a goldfinch can be memorable. I still retain vivid imagery of these birds from childhood, long before I could identify them by name. They would always appear in late summer, perching atop the three blue spruces in our yard. The trees are no longer standing, but the memories of those colorful yellow and black birds endure.

Summer is the season of plenty for American goldfinches. Roadside ditches are choked with chicory, evening primrose and other seed-producing plants often dismissed as “weeds.” Simply driving local roads can, and often does, produce sightings of flocks of American goldfinches as they forage for seeds.

These small, colorful finches are also regular visitors to my feeders, although they don’t really need my offering of black oil sunflower seeds to supplement the natural smorgasbord available to them.

Their fondness for seeds has inspired many of the common names for this bird, including lettuce bird, thistle-bird, yellow-bird and wild canary. My late grandmother, Bertha Sneyd, introduced me to the term “lettuce bird” as an alternative name for goldfinch. As she explained, the finches would come to gardens once lettuce had gone to seed. 

This fondness and dependence on seeds for its dietary needs has even shaped the nesting habits of this species. The American goldfinch is also one of the last songbirds to nest each season. 

According to a profile of the American goldfinch posted at the website for the Tennessee Wildlife Resources Agency, goldfinches don’t even start to think about nesting until late July and early August. Their nesting season is timed deliberately to coincide with this season of natural abundance. Goldfinches feed their young mostly on seeds, as opposed to most songbirds that work so hard to gather insects to feed their young a protein-rich diet.

It’s a satisfying irony that, although brown-headed cowbird females sometimes slip their eggs into a goldfinch nest, any cowbirds hatched in those nests rarely survive. While goldfinch hatchlings are adapted to thrive on a diet of seeds, the fostered young cowbirds fail to thrive on a diet so lacking in the protein derived from insects.

While the male American goldfinch during the breeding season is unmistakable in his bright yellow, black and white plumage, the female goldfinch is more subdued in coloration. Males also sing a bubbly, cheerful song when seeking to win the attention of a potential mate.  

According to the profile on the TWRA website, the goldfinch’s song is a variable series of musical trills and twitters, often interspersed with a bay beephrase. The distinctive flight call is described as sounding like “potato chip” or “per chicory.”

For these and other reasons, goldfinches are favorites of many bird lovers. There are actually three species of goldfinches in North America. The two related species are Lawrence’s goldfinch of California and the lesser goldfinch, which ranges through the southwestern United States as well as Central and South America.

Lawrence’s goldfinch was named by John Cassin in 1850 for his colleague George Lawrence, a New York businessman and amateur ornithologist. His enthusiasm for birds must have impressed his colleagues. One bird genus and 20 species were named in his honor. Lawrence’s goldfinch, known by the scientific name Spinus lawrencei, honors him doubly with both the scientific and common names for the bird.

The American goldfinch is also known by other common names, including wild canary, yellowbird and willow goldfinch. I’ve also heard the goldfinch referred to as “lettuce bird.” This nickname, which was one my maternal grandmother applied to the bird, relates to the bird’s fondness for seeds. Apparently the goldfinches would flock to lettuce plants in the garden once they had gone to seed.

Photo by Bryan Stevens • A male American goldfinch perched.

Come winter, this vibrant American goldfinch undergoes a transformation into a dull, drab bird with grayish feather. In fact, this annual molt usually begins in September. During the fall and winter, the American goldfinch looks almost like an entirely different bird.

It’s understandable why people love to entertain flocks of these finches in their yards and gardens. Three states — Washington, Iowa and New Jersey — have gone so far as to make the American goldfinch their official state bird.

The best strategy for attracting goldfinches is to provide some of their favorite foods. Black oil sunflower seed and the seeds of nyjer thistle are highly favored. The tiny thistle seeds require special feeders. Mesh “socks” can also be used to dispense the thistle seed.

An alternative is to plant a garden that offers an abundance of fresh seeds. A stand of sunflowers will attract goldfinches, as well as other birds such as indigo bunting and house finch. Liatris, also known as gay feather, produces flower spikes that are sought out by goldfinches for their seeds. Other favorites include asters and coneflowers. The bonus is that even after the beautiful blooms are past, the birds can still benefit from the seeds left behind after flowering.

To share an observation, make a comment or ask a question, email me at ahoodedwarbler@aol.com.

Surprise! Hummingbirds come in variety of sizes

This week’s column is about hummingbirds, the big and the small ones. Frances Lamberts in Jonesborough sent me an email earlier this month that got the ball rolling for this week’s hummingbird column.

“Two hummingbirds were here for a good week long,

at the end of April,” Frances wrote. “Then they were gone, and I haven’t seen any since. Despite the heat/drought (and with some watering), the

property has many favorite flowers in bloom, including the blue salvia, red pole beans, monarda, many others come and gone, the cardinal flowers about to bloom.”

Her question was a simple one: “Where are the hummers?”

She noted that she has kept a “first sightings” record for about 20 year. One year the hummingbirds didn’t arrive until mid June, which worried her at the time.

“What is happening now?” Frances asked.

The simple and honest answer is that it’s not really possible to land on any single answer. Birds have wings, and hummingbirds are capable to long-distance flights.

Still, a setting such as the one Frances described with such a wide variety of blooms should be teeming with hummingbirds.

Personally, it’s been a perplexing season. My hummingbirds arrived back in April, stuck around for perhaps a week, and then almost disappeared. They returned in mid-June, remained visible for a couple of weeks, but have since pulled another vanishing act.

In any given year, the numbers of hummingbirds passing thorough is going to fluctuate. Some years, these tiny flying gems will be present in good numbers on an almost daily basis. Other years, hummingbirds can become quite scarce.

I usually enjoy my best hummingbird numbers in the fall as these little birds begin their leisurely journey back south. Late August and the month of September is usually a great time to watch hummingbirds. I’m optimistic that the same will hold true this fall.

In some other hummingbird news, the world added another species of hummingbird this year when the giant hummingbird of South America got split into two distinct species.

Abi Cole, writing for Audubon Magazine, reported in an article on June 7, 2024, that scientists have considered two distinct populations of giant hummingbird — a migratory southern population in Chile, Argentina and Bolivia, and a non-migratory northern population in Chile, Ecuador and Peru — to be the same species.

Now, scientists have reconsidered that belief and learned that the two species have been able to fool scientists for so long by basically, as Cole’s article phrases it, by hiding in plain sight.

Cole’s article details the elaborate process by which giant hummingbirds were captured and fitted with geolocator devices. The article credits Jessie Williamson, lead author of the new study and a National Science Foundation postdoctoral research fellow, with unraveling the mystery.

Williamson did so by intensively studying the Chilean population. The resulting research also revealed some huge surprises.

For centuries, there has been speculation about where the Chilean giant hummingbirds go to spend the winter. Now we know – they make an astonishing, record-breaking 5,200-mile round trip to spend several months with their cousins in the Peruvian Andes.

Because the Chilean and Peruvian birds look so much alike, no one had ever realized that they were co-existing with each other during the winter season.

Of course, the name “giant hummingbird” is almost an oxymoron for a family of birds famous for their diminutive size. Now that we have two species of giant hummingbirds, they can’t both hold the title of world’s biggest hummingbird.

So, which is the bigger bird? As it turns out, the giant hummingbirds living year round in the Andes, now known as the northern giant hummingbird, is slightly bigger than the migratory southern giant hummingbird.

The article about these discoveries is fascinating. To read it for yourself, visit http://www.audubon.org/magazine/scientists-discover-worlds-largest-hummingbird-hiding-plain-sight.

The giant hummingbird does earn the right to that name. Both of the two species weigh between 18 and 24 grams and have a wingspan of about 8.5 inches. They have a body length of 9.1 inches. For a useful comparison, they are about equal to the size of a European starling or a Northern cardinal.

They are not the dazzling beauties most people associate with hummingbirds. Giant hummingbirds have a drab greenish plumage above with a whitish rump patch and dingy coloration below with variable rusty tones and dusky spotting. They do have the long bills and overall physical shape of other hummingbirds. The scientific name is Patagona gigas, roughly translated as the giant of Patagonia.

Photo by Bryan Stevens • Welcoming hummingbirds also involves making sure that they remain healthy and safe while spending time in our yards and gardens.

Count the giant hummingbird (either of the two species) as birds I’d like to see some day. The world’s diversity of hummingbirds is dazzling, but I feel fortunate to enjoy the ruby-throated hummingbird from April to October every year. As anyone knows who hosts these tiny birds, ruby-throated hummingbirds are dazzling and engaging guests during their all-too-brief.

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To ask a question, make a comment or share a sighting, email me at ahoodedwarbler@aol.com.

 

Summer’s swallows are graceful, aerodynamic birds

Tom Koerner/USFWS • A perched tree swallow surveys its surroundings..

They took their time this year, but the tree swallows are finally putting in appearances almost daily, especially on the string of sunny, hot days the region has experience lately. This pair of swallows has become frequent visitors since the middle of last month.

Based on their behavior, which primarily consists of aerial foraging over fields and a pond at my home, I’m convinced they are feeding young. They don’t, however, appear to be residing in any of my nest boxes. I’m simply glad they are nesting close enough to ensure frequent visits. It probably won’t be long before their young are soaring over the fields with them.

No matter where you live, you probably don’t have to go far to see one of the members of the bird family known as swallows. These graceful, aerodynamic birds are quite familiar to most people. If you spend much time at all outdoors during the summer months, chances are you’ve observed some members of this family.

Vincent Simard from Pixabay. • A tree swallow peeks from a nest box.

It’s usually not too difficult to find five of the six species that are known to make Northeast Tennessee and Southwest Virginia their home from spring to fall. The more commonplace swallows are barn swallow and tree swallows, but during the summer months purple martins, cliff swallows and northern rough-winged swallows also call the region home.

Barn swallow and tree swallow are the two members of the family that are probably best known to people. They have adapted to life in both suburban and rural areas, which brings them into frequent contact with people.

These days, the barn swallow is as apt to nest in a parking garage or on an apartment balcony as inside a barn in the countryside. Once young swallows leave the nest, parents will park them on a perch as they continue to feed the still dependent young. Adults fly over nearby fields, foraging for insects that they catch on the wing and deliver back to the waiting, always hungry, young birds.

A freshly mown field is a magnet for swallows. I don’t know how the word spreads so quickly among these birds, but I’ve observed dozens of these birds descending on fields soon after they have been mowed for hay. At times, the birds arrive while the mowing is still taking place, swooping after insects stirred up in the tractor’s wake.

I haven’t observed any bank swallows in the region this year, but these members of the swallow family are rather hit-or-miss in the region. Because of their specialized nesting needs, bank swallows are localized in their distribution and not as widespread as their kin.

Cliff swallows nest beneath many local bridges. These swallows, which at one time nested primarily on rocky cliffs, hence their name, now frequently nest under man-made structures. These swallows make their jug-shaped nests out of mud and clay. These nesting “jugs” are all located in clusters beneath bridges and other structures. It’s a wonder that the parents flying in with food are able to tell their nests apart from the nearby seemingly identical nests of their neighbors.

Photo by Bryan Stevens • A Northern rough-winged swallow perches on a rusty pole.

Northern rough-winged swallows are opportunists when it comes to nesting. According to a profile written by Mark Johns with North Carolina Wesleyan College, this small swallow nests near rocky gorges, shale banks, stony road cuts, railroad embankments, gravel pits, eroded margins of streams and other exposed banks of clay, sand or gravel. They will also nest in old kingfisher burrows, protruding drainpipes, crevices in brick or stone structures such as dams, bridges or tunnels, gutters and culverts. Their nests are often built near open water.

The Northern rough-winged swallow ranks as one of the species with the longest common names in North America. It’s name consists of 26 letters and a hyphen, which ranks it one letter below both the Northern beardless-tyrannulet and a recently-created species — the saltmarsh sharp-tailed sparrow — which each have 27 letters and a hyphen. Formerly known as sharp-tailed sparrow, the species was renamed with “salt marsh” added to distinguish it from a relative, Nelson’s sparrow.

Purple martins, which rank as the largest member of the swallow family in North America, are famous for nesting in large colonies. Nesting facilities range from groupings of natural or artificial gourds fashioned into a nesting chamber, as well as large, multi-level condominium dwellings tailored for the specific needs of this communal bird. A colony can consist of several dozen to several hundred pairs of these birds. Only the adult male purple martin shows the iridescent, dark blue-purple plumage that provides the species with its name.

The tree swallow is my favorite, probably because a pair of these birds has nested in my yard for many years. Unlike other swallows, these cavity-nesting birds will readily accept nesting boxes. They compete with Eastern bluebirds for boxes, but the two species usually can work out a truce and settle down to nest in close proximity to each other. The iridescent blue-green male tree swallow, complete with white underparts and a forked tail, is a handsome bird and a welcome addition to the bird population in any yard or garden. Tree swallows enjoy water, so a nearby pond or creek is a boon for attracting these birds.

While only a few swallows range into the United States and Canada, a total of 83 species of swallows can be found worldwide. Some of the common names for these different swallows (and martins) are quite descriptive. A sampling includes white-eyed river martin, square-tailed saw-wing, white-headed saw-wing, grey-rumped swallow, white-backed swallow, banded martin, violet-green swallow, golden swallow, brown-chested martin, brown-bellied swallow, pale-footed swallow, white-bibbed swallow, pearl-breasted swallow, greater striped swallow, mosque swallow, fairy martin and chestnut-collared swallow.

Enjoy swallows while you can. They depart earlier than most of our other summer nesting birds. Once their young are out of the nest, they are soon forming large flocks in preparation for flying south.

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To share a sighting, ask a question or make a comment, email me at ahoodedwarbler@aol.com.

 

Summer bird count finds 114 species

Hans Toom/Pixabay • A chestnut-sided warbler was one of 18 species of warblers tallied on the annual survey.

The 31st Carter County Summer Bird Count was held on the first day of June with 23 observers in nine parties. The weather was generally favorable, but somewhat cool early in the morning and breezy at times.

Participants tallied 114 species, which is exactly the 30 year average, but slightly below the average of the last decade of 117 species. The all-time high was 123 species in 2017.

Abundant birds included European starling (471), American robin (372), cliff swallow (330), Canada goose (270), song sparrow (240) and American crow, 208.

The list:

Canada goose, 270; wood duck, 5; mallard, 52; and wild turkey, 13.

Photo by Bryan Stevens • Five wood ducks were found on count day.

Rock pigeon, 61; Eurasian collared-dove, 1; mourning dove, 130; yellow-billed cuckoo, 1; and chuck-will’s-widow, 1.

Eastern whip-poor-will, 13; chimney swift, 61; and ruby-throated hummingbird, 15.

Killdeer, 11; American woodcock, 4; double-crested cormorant, 7; great blue heron, 18; and green heron, 4.

Black vulture, 14; turkey vulture, 59; sharp-shinned hawk, 3; Cooper’s hawk, 1; bald eagle, 3; red-shouldered hawk 1; broad-winged hawk, 8; red-tailed hawk, 12; Eastern screech-owl 8; and barred owl, 2.

Belted kingfisher, 11; red-bellied woodpecker, 31; yellow-bellied sapsucker, 6; hairy woodpecker, 6; Northern flicker, 13; pileated woodpecker, 22; and American kestrel, 1.

Great crested flycatcher, 5; Eastern kingbird, 24; Eastern wood-pewee, 28;

Acadian flycatcher, 19; alder flycatcher, 1; least flycatcher, 10; and Eastern phoebe, 65.

White-eyed vireo, 6; blue-headed vireo, 47; warbling vireo, 1; and red-eyed vireo, 205.

Blue jay, 80; American crow, 208; fish crow, 5; and common raven, 14.

Photo by Bryan Stevens • A young titmouse visits a suet feeder.

Carolina chickadee, 49; tufted titmouse, 91; tree swallow, 88; Northern rough-winged swallow, 32; purple martin, 21; barn swallow, 135; and cliff swallow, 330.

Golden-crowned kinglet, 20; cedar waxwing, 58; Red-breasted nuthatch, 16 white-breasted nuthatch, 17; brown creeper, 6; and blue-gray gnatcatcher, 15.

Carolina wren, 126; house wren 48; and winter wren, 7.

Gray catbird, 36; brown thrasher, 34; Northern mockingbird, 62; European starling, 471; Eastern bluebird, 86; veery, 21; hermit thrush, 5; wood thrush, 56; and American robin, 372.

House sparrow, 40; house finch 86; pine siskin, 8; and American goldfinch, 77.

Chipping sparrow, 85; field sparrow, 25; dark-eyed junco, 51; song sparrow, 240; Eastern towhee, 135; yellow-breasted chat, 9; Eastern meadowlark, 9; orchard oriole, 7; Baltimore oriole, 7; red-winged blackbird, 68; brown-headed cowbird, 27; and common grackle, 87.

Ovenbird, 73; worm-eating warbler, 12; Louisiana waterthrush, 6; black-and-white warbler, 44; Swainson’s warbler, 9; common yellowthroat, 27; hooded warbler, 145; American redstart, 9; Northern parula, 48; blackburnian warbler, 4; yellow warbler, 5; chestnut-sided warbler, 30; black-throated blue warbler, 61; pine warbler, 4; yellow-rumped warbler, 4; yellow-throated warbler, 18; black-throated green warbler, 50; and Canada warbler, 20.

Scarlet tanager 28; Northern cardinal, 135; rose-breasted grosbeak, 13 blue grosbeak, 4; and indigo bunting, 141.

According to long-time count compiler Rick Knight, a few species were missed on count day, usually because they are very localized in distribution or occur in very low densities. And sometimes, he noted, the birds just don’t cooperate.

Some exciting observations include a family group of four American woodcocks at Carvers Gap on Roan Mountain. In addition, 18 species of warblers were found on the count.

Missed species: Common merganser – although a female with a brood of ducklings was seen the day prior to the count – as well as ruffed grouse, common niighthawkhawk, yellow-crowned night-heron, great horned owl, yellow-throated vireo, grasshopper sparrow, golden-winged warbler, Kentucky warbler, magnolia warbler and prairie warbler.

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To share a sighting, ask a question or make a comment, email ahoodedwarbler@aol.com.