Tag Archives: waterfowl migration

Unusual ducks pick Bristol’s Middlebrook Lake for brief visit

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Photo by Bryan Stevens • A black-bellied whistling duck rests inside an aviary located at Brookgreen Gardens in South Carolina. In the wild, this species of duck has been expanding its range in the southern United States.

 

Joanne Campbell notified me via Facebook of a visit of an unusual waterfowl on Saturday, May 18, at her home near Middlebrook Lake in Bristol, Tennessee.

I needed a moment to look past the obvious Canada goose in the photograph before my eyes registered the four small ducks on the grassy bank. I recognized them instantly as black-bellied whistling ducks.

Black-bellied whistling ducks are members of a group of ducks known as “tree ducks” and “whistling ducks.” There is some debate about whether they are more closely related to ducks or geese.

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Photo courtesy of Joanne Campbell • The four visiting black-bellied whistling ducks line up along the edge of Middlebrook Lake as a Canada goose swims past.

Joanne’s recent sighting near her home culminates a series of sightings throughout the region over the past month or so. For whatever reason, these ducks have popped up in various locations throughout the region in recent weeks.

Birder and photographer Adam Campbell found 11 black-bellied whistling ducks at a new retention pond off Exit 14 along Interstate 81 in Abington, Virginia, on Sunday, May 12.

A month earlier, birder Graham Gerdeman, a resident of Nashville, Tennessee, found a black-bellied whistling duck at the Harpeth/Morton Mills Greenway in Nashville on Friday, April 12.

On Friday, April 19, another lone black-bellied whistling duck was spotted in a grocery store parking lot in Fairview near Murfreesboro, Tennessee, by birder Kathy Malone.

Birders Ronald Hoff and Dollyann Myers observed a black-bellied whistling duck on Friday, May 17, on a small lake on Highway 411 south of Maryville, Tennessee, on the line between Blount and Loudon counties.

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Photo by Bryan Stevens • Although widely kept in aviaries, black-bellied whistling ducks are becoming increasingly frequent wild visitors in the Volunteer State. East Tennessee saw a spike of sightings this spring of this duck.

In West Tennessee, closer to the Mississippi River waterfowl migration flyway, the black-bellied whistling duck is a more common bird. The ducks, which are typically found in Central and South America, range into the United States typically only in southern Texas and Arizona, as well as occasionally in Louisiana, Mississippi, Arkansas and Florida. Some field guides indicate that these ducks are not long-distance migrants, but birders in western Tennessee would disagree with that assessment.

In appearance, males and females are similar with long necks, red bills and long, pinkish-red legs. The plumage is mostly chestnut with a black belly and a readily visible white wing patch.

These ducks are often described as being somewhat similar to geese and are not considered true ducks. They are classified by biologists in the genus Dendrocygna. Species in the genus include the West Indian whistling duck, wandering whistling duck, fulvous whistling duck, plumed whistling duck, spotted whistling duck, lesser whistling duck and white-faced whistling duck. Only the fulvous whistling duck joins the black-bellied whistling duck in ranging into the United States in such locations as Florida, Louisiana, Texas and California.

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Photo by Bryan Stevens • A black-bellied whistling duck (foreground) and a fulvous whistling duck (background) share space within an aviary at Brookgreen Gardens in South Carolina.

Black-bellied whistling ducks will nest both in natural cavities or on the ground in areas with thick vegetation. If nesting boxes are available, these ducks will gladly nest in them. According to the North American Breeding Bird Survey, black-bellied whistling-ducks have been expanding their range in the southern United States. These ducks have experienced strong population growth, estimated at more than 6 percent per year from 1966 to 2014. The world population is estimated at 1,100,000 to 2,000,000 birds and increasing, which could explain why appearances are becoming somewhat more commonplace in states like Tennessee, as well as Virginia and the Carolinas.

Formerly called the black-bellied tree duck, this waterfowl has also been given common names such as “whistling duck” and “Mexican squealer.” As indicated by these different names, these are highly vocal birds with a clear, piercing whistled call.

The black-bellied whistling ducks at Middlebrook Lake lingered for several hours, which allowed many birders in the region to make the drive to the lake to observe such an interesting visitor to the region.

Joanne later posted on Facebook about the excitement generated by the ducks. “I couldn’t get any work done for watching them,” she wrote in her post.

The ducks are not the first rare bird that Joanne has alerted me to at Middlebrook. Back in November of 2015, she notified me of an American white pelican that spent a couple of days on the lake. I’m grateful to her for notifying me about both the black-bellied whistling ducks and the pelican.

I always enjoy hearing from readers with observations to share. To make a comment, ask a question, or share a sighting, email me at ahoodedwarbler@aol.com.

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Photo by Bryan Stevens • A black-bellied whistling duck enjoys a vigorous bath within its enclosure in an aviary at Brookgreen Gardens in South Carolina. This duck is often kept in captivity. The wild population has expanded its range in recent years from Central America into the southern United States.

American wigeon also known by name ‘baldpate’

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Photo by Tim McCabe/U.S. Fish & Wildlife Service • This male American wigeon shows the white head patch that gives this duck its other common name of “baldpate.” In this photograph, a female wigeon rests near her mate while a male redhead, a species of diving duck, swims in the background. This duck nests in season wetlands in the American midwest.

Erwin, Tennessee, resident Pattie Rowland recently asked my help identifying some ducks she had photographed at the pond at Erwin Fishery Park. She already suspected the ducks in her photo were American wigeons, but she wanted confirmation.

The ducks were indeed wigeons, which are classified with the “dabblers” instead of the “divers,” which are two broad categories for describing the wild ducks likely to occur throughout North America. Dabblers feed mostly near the surface of the water, foraging on everything for aquatic insects to roots and tubers. The “divers,” not surprisingly, dive into the depth to pursue fish, mollusks and other aquatic prey.

“This was my first time to see them,” Pattie noted in a Facebook message. I congratulated her because I know how exciting a new observation of a bird can be.

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Photo by Roy Lowe/U.S. Fish & Wildlife Service • A male American wigeon looks quite at home swimming on a small pond. Wigeons belong to ducks that are classified as “dabblers” and “puddle ducks.”

It’s not been an exciting winter for ducks in the region. Other than some redheads and buffleheads back in November and early December at the start of the winter, the wigeons are the only wild ducks of interest that I’ve observed at the pond.

The U.S. Fish and Wildlife Service released its report this past summer on 2018 Trends in Duck Breeding Populations, based on surveys conducted in May and early June of 2018 by FWS and Canadian Wildlife Service.

Overall duck numbers in the survey area remained high, according to the report. Total populations were estimated at 41.2 million breeding ducks in the traditional survey area, 13 percent lower than last year’s estimate of 47.3 million but 17 percent above the long-term average. The projected mallard fall flight index was estimated at 11.4 million birds, down from the 2017 estimate of 12.9 million.
“The dip in the population for prairie-breeding puddle ducks is not unexpected and by no means unprecedented given that conditions on the prairies this spring were drier than last year,” said DU Chief Scientist Tom Moorman. “As a result, 2018 populations dropped accordingly. However, populations of all key species except northern pintails and scaup remain above long-term averages. This year’s breeding population decline is a reminder of the need to sustain the capacity of breeding habitats, particularly in the prairies as we go through natural variation in wetland conditions. Waterfowl populations are adapted well to short-term swings in habitat conditions, but we must continue to guard against the long-term loss of prairie breeding habitat.”

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Early naturalist and artist John James Audubon painted this pair of American wigeon, a duck for which the male has earned the name “baldpate” for a distinctive white crown patch.

American wigeons, however, bucked the trend of some of the other prairie-breeding puddle ducks and showed a slight rise in overall numbers. The wigeon breeding population was estimated at 2.8 individual ducks, according to the survey. Wigeons beat their long-term average, which rests at 2.6 million.

The American wigeon can be found all over North America. Their breeding grounds stretch from Alaska across the tundras of Canada all the way to the Atlantic Ocean. American Wigeons can be found in their wintering habitats from the American Northwest to central Mexico, from the southern prairie pothole region through the Gulf Coast and from New York to the Bahamas close to the Atlantic shoreline. American wigeons are also common winter visitors to Central America, the Caribbean, northern Colombia, Trinidad and occasionally Venezuela

Wigeons are aquatic grazers and forage on grasses and sedges in wet meadows and pastures. The American wigeon’s diet has a higher proportion of plant matter than the diet of any other dabbling duck.

It’s also called the “baldpate” for the same reason our national bird is known as the “bald” eagle. A white patch on the forehead reminded early naturalists of a bald man’s head in much the same way that our national bird earned the term “bald” eagle because of its own white head. Further, the word “bald” is thought to derive from an archaic word in Middle English meaning “white patch,” from which the archaic definition “marked or steaked with white” is drawn.

The origins of the term “wigeon” are a bit murkier. According to Merriam-Webster Dictionary, the first known use of “wigeon” dates back to 1508, and other sources suggest that the term perhaps was derived from a French/Balearic term meaning “a kind of small crane.”

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Photo by Coffee/Pixabay.com • Gadwalls are close relatives of American wigeon.

There are two other species of wigeons — the Eurasian wigeon of Asia and Europe and the Chiloé wigeon of South America. Wigeons belong to the Mareca genus of dabbling ducks, which also includes gadwall and falcated teal.

While female American wigeons produce a rather raspy quacking sound, wigeons more typically produce a vocalization when excited that sounds like “whew, whew, whew.”

Some ducks have become associated with certain bodies of water in the region, and the American wigeon is no exception. In addition to the pond at Erwin Fishery Park, there have been reports of American wigeons this winter from a large pond adjacent to the campus of Northeast State Community College in Elizabethton, Tennessee, as well as on the weir dam at Osceola Island Recreation Site in Bristol. Hooded mergansers have wintered in large numbers at Middlebrook Lake in Bristol. Hundreds of buffleheads have wintered at Wilbur Lake near Elizabethton, Tennessee, for decades. March and April, being periods of transition as winter changes into spring, could bring migrating ducks to the region’s ponds, lakes and rivers. Keep your eyes open and you could be surprised by what you find.

 

 

Duck…duck…goose? Winter season good time for finding rare geese in the region

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Photo by Bryan Stevens • A snow goose swims amid Canada geese at the pond at Fishery Park in Erwin, Tennessee.

 

Of the geese found in the region, the well-known Canada goose is nearly ubiquitous. That’s not always been the case. For instance, in his book The Birds of Northeast Tennessee, Rick Knight points out that the geese now present throughout the year resulted from stocking programs conducted in the 1970s and 1980s. In earlier decades, the Canada goose was considered a rare winter visitor to the region.

Seeing the Canada goose in every sort of habitat from golf courses to grassy margins along city walking trails, it’s hard to imagine a time when this goose wasn’t one of the region’s most common waterfowl.

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Early American naturalist and artist John James Audubon captured this pair of Canada geese in a most realistic painting.

The world’s geese are not as numerous as ducks, but there are still about 20 species of geese worldwide, compared to about 120 species of ducks. While both ducks and geese are lumped together as waterfowl, most geese are more terrestrial than ducks. Birders are just as likely to spot geese in a pasture or on the greens of a golf course as they are on a lake or pond.

There have been several species of geese usually considered rare to uncommon in the region that have been spotted by birders thus far this winter season. I personally observed greater white-fronted geese at several different locations in November and December.

The greater white-fronted goose is considerably smaller than a Canada goose. The bird is named for the distinctive white band found at the base of bill. This white band also helps distinguish this goose from similar domestic geese. The sexes are similar in appearance, but females are usually smaller than males. The head, neck and upper back of white-fronted geese are grayish-brown. The lower back and rump are dark brown, and the tail is dark brown and edged with white. The chest and breast are grayish with dark brown to black blotches and bars on the breast, giving this goose the nickname “specklebelly.” The bill is pinkish and the legs and feet are orange.

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Photo by Bryan Stevens The Greater White-fronted Goose, in background, is much smaller than the typical Canada Goose, which is shown in the foreground of this photograph.

The greater white-fronted goose breeds in North America as well as in Europe and Asia, and they spend the winter throughout the United States and even in Japan. Most nesting in North America takes place on the North Slope of Alaska and across the western and central Canadian Arctic. Wintering habitats include coastal marshes, wet fields and and freshwater wetlands.

Only a couple of weeks ago, I spotted a snow goose at the fish pond located at Erwin Fishery Park. The snow goose is a North American goose known for its white plumage that gives the bird its common name; however, the snow goose actually comes in two versions: the white phase and a blue phase, which is often referred to as a “blue goose.”

The snow goose breeds in regions in the far north, including Alaska, Canada, Greenland and even the northeastern tip of Siberia. They may spend the winter as far south as Texas and Mexico, although some will migrate no farther than southwestern British Columbia in Canada.

The snow goose bucks the trends that show many species of waterfowl declining. Recent surveys show that the population of the snow goose exceeds five million birds, which is an increase of more than 300 percent since the mid-1970s. In fact, this goose is thriving to such a degree that the large population has begun to inflict damage on its breeding habitat in some tundra regions.

A smaller relative to the snow goose is the Ross’s goose, which for all practical purposes looks like a snow goose in miniature. The common name of this goose honors Bernard R. Ross, who was associated with the Hudson’s Bay Company in Canada’s Northwest Territories.

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Photo by Bryan Stevens • A visiting Ross’s goose takes a swim on the large pond at Northeast State Community College in Elizabethton, Tennessee, a few winters ago.

Here’s a quick history lesson. Hudson’s Bay Company is the oldest commercial corporation in North America. The company has been in continuous operation for more than 340 years, which ranks it as one of the oldest in the world. The company began as a fur-trading enterprise, thanks to an English royal charter in back in 1670 during the reign of King Charles II. These days, Hudson’s Bay Company owns and operates retail stores throughout Canada and the United States.

In addition to his trade in furs, Ross collected specimens for the Smithsonian Institution in Washington, D.C. Ross is responsible for giving the goose that now bears his name one of its early common names – the Horned Wavy Goose of Hearne. I wonder why that never caught on?

Ross repeatedly insisted that this small goose was a species distinct from the related and larger lesser snow goose and greater snow goose. His vouching for this small white goose eventually convinced other experts that this bird was indeed its own species.

Ross was born in Ireland in 1827. He died in Toronto, Ontario, in 1874. He was described by other prominent early naturalists as “enthusiastic” and “a careful observer” in the employ of Hudson’s Bay Company. When John Cassin gave the Ross’s Goose its first scientific name of Anser rossii in 1861, he paid tribute to the Hudson’s Bay Company’s Ross.

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Photo by Bryan Stevens • In some areas, Canada geese have become so prevalent that they are considered pests. Human handouts to waterfowl are not always compatible with good health for the birds that receive them.

The Ross’s goose has a “cuteness” factor working in its favor. For a goose, it is rather small. It could best be described as a snow goose in miniature. In fact, it isn’t much larger than such ducks as mallards and is considered the smallest of North America’s geese.

The Ross’s goose has also acquired some other common names, including “galoot” and “scabby-nosed wavey.” This latter name was inspired by the bird’s bill, which is covered with rough bumps around the base. I have to admit that “scabby-nosed wavey” is a name likely to stick in the memory. Today, the Ross’s goose’s scientific name is Chen rossii.

Other geese found worldwide include the pink-footed goose, bar-headed goose, emperor goose, red-breasted goose and barnacle goose.

So, does this inspire you to try a wild goose chase of your own? If it does, best of luck in your efforts.

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To learn more about birds and other topics from the natural world, friend Stevens on Facebook at https://www.facebook.com/ahoodedwarbler. If you have a question, wish to make a comment or share a sighting, email ahoodedwarbler@aol.com.

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Photo by Bryan Stevens • A Cackling goose, foreground, is shown in relation to some larger Canada geese, at a pond at Fishery Park in Erwin, Tennessee.