Category Archives: American robin

American robins become more prominent with shifting of seasons

 

 

Robins-ETSU-Feb

Photo by Bryan Stevens • Returning American robins, prominent in lawns and gardens during their annual spring migration, will soon turn their attention to nesting duties.

I don’t think I’m alone in doing what I can to speed along the process of spring’s arrival. I’ve heard from different people, all eager to share their observations of one of the sure signals — the arrival of flocks of American robins — of the shifting of the winter season to spring.

Bobby Howser phoned me to let me know of a large flock of American Robins he encountered at the Sullins College building in Bristol, Virginia.

He said the flock “swarmed like bees” into a tall holly tree. He was surprised to see so many robins in a single tree and asked if it was an unusual occurrence.

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Early American naturalist and painter John James Audubon painted this American robin with a couple of the bird’s eggs.

Ernie Marburg in Abingdon, Virginia, emailed me about the same time.

“I just wanted to report that we have been inundated with a huge flock of mostly robins,” he wrote. He estimated that the flock contained 300 to 500 individuals.

“They ate all the red berries from my neighbor’s large holly tree yet appear to avoid other holly trees with many red berries just a short distance away,” Ernie wrote. The flock remained active in the tree from morning into early afternoon.

Not long after he first emailed me, Ernie contacted me again. “I wanted to give you an update on the robin invasion,” he wrote. “They have been here two additional mornings since I first reported to you. Their pattern is different now though. They are spaced apart and appear to be ground feeding individually.”

Robin-OnNest

Photo by Bryan Stevens • American robin sitting on its nest in the shelter of a side of a bridge spanning the Doe River in Elizabethton, Tennessee.

Ernie proposed a theory about the behavior of the robins.

“I think they followed the south to north weather pattern we had recently that provided significant rainfall,” he explained. “The rainfall, in turn, caused the ground to thaw and the earth worms to come to the surface thus providing a food source for the robins. In summary, the robins are following their food source.”

I responded to Ernie and congratulated him on what I thought was an excellent theory.

Ernie also wrote me that he had read an article some time ago that said robins would eat cooked elbow macaroni if put out for them.

“We did that, but not one robin ate the macaroni,” he said. “Moral of the story is, as you would expect, don’t believe everything you read.”

I’ve read similar suggestions of unusual items to try to tempt birds not prone to visit feeders. I told Ernie that I wasn’t too surprised that the robins ignored the macaroni. The observations of robin feeding habits made by Bobby and Ernie also correspond to the changing seasons. Holly trees retain their berries into late winter, which provide an abundant food source for robins, as well as other birds. As the temperatures begin to rise in early spring, the birds switch their diet in favor of earthworms. This protein-rich food source fuels the impressive migration made by robins each year.

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Photo by Bryan Stevens • An American robin scans for prey in the grass and clover of a lawn.

I posted on my Facebook page about the flocks of robins I’d observed, which resulted in several comments on my original post.

Johnny Mann, who lives in Bristol, Tennessee, shared on my Facebook page after I posted about seeing flocks of robins almost everywhere I have gone recently. He noted that he has been seeing Eastern bluebirds, which are a smaller relative of robins. He noted in his comment that the bluebirds are feeding on suet.

Jackie Lynn, who lives in Wytheville, Virginia, also posted a comment on my Facebook page. Jackie saw a large flock of robins feeding in a field, enjoying the worms brought to the surface by recent rains. “Dinner was served,” Jackie reported.

Several other people responded optimistically on my Facebook page, sharing the hope that the influx of robins does indeed signal the approach of spring.

The American robin is known by the scientific name Turdus migratorius, which can be translated as “migratory thrush.” Indeed, this well-known American bird is related to other thrushes, including the Eastern bluebird, wood thrush and veery. The relationship to other thrushes is quite visible in young birds, which display a spotted breast until they mature and acquire the familiar red breast associated with robins.

There are 82 other species in the genus, which ranges not only in the Americas, but Europe, Asia, Africa and Australia, as well. Some of the American robin’s fellow genus members include the olive thrush, the bare-eyed thrush, pale thrush, great thrush, black-billed thrush and cocoa thrush.

AmericanRobin

Photo by Bryan Stevens • While American robins like fruit when its available, they also spend a lot of time feeding on earthworms and insects.

When the first European settlers arrived in North America, the robin was still a bird living in the forests. Robins proved incredibly capable of adapting to the presence of humans. Soon enough, these once shy forest birds began to frequent lawns and city parks. The robin soon became one of America’s most popular songbirds. Three states — Connecticut, Michigan and Wisconsin — have conferred official state bird status on the American robin.

Robins begin nesting almost as soon as they return each spring. Nesting success in a previous season instills fidelity to the location where the birds nested, resulting in many robins returning to the same nesting area year after year. Although some robins invariably spent the entire winter season in the region, it is still a welcome sight to see migrating flocks of these birds in February and early March. The sudden resurgence of the American robin each spring is a reminder that another winter will soon be history. I know I’m always pleased to welcome them back.

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Bryan Stevens lives near Roan Mountain, Tennessee. To learn more about birds and other topics from the natural world, friend him 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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Early American naturalist and painter John James Audubon captured this family of American robins in one of his masterful paintings.

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Readers report on robin, purple martin that stand out from other members of their flocks

 

Albino-Swallow

Photo by Jean Potter • Two barn swallows in typical plumage perch on a wire with an albino individual.

Birds of a feather, as the old saying goes, tend to flock together, but what happens when a member of the flock stands out from the rest? Although conventional wisdom mandates that being conspicuous is not helpful for most wild creatures, some of them can’t help but get attention. Different readers have brought to my attention some birds at their homes that instantly stood out.

Sara and Ed Gschwind, residents of Bristol, Tennessee, have been keeping tabs on an American robin in their yard that is showing an extensive amount of white feathers in its plumage. For the most part, this particular robin has a white head, largely white wings and extensive white in the typically red breast. “My 88-year-old mother, Nora Rockett, suggested I send a photo to you,” Sara wrote in an email.

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Photo by Ed Gschwind • A leucistic American robin enjoy time in a bird bath. Albino and leucistic birds are rather rare in nature.

Sara said that her mother, who has lived in Bristol all her life, has never seen anything like it. I replied to Sara’s email, asking for a few more details.

While the robin interacts with others of its kind, the Gschwinds haven’t seen any evidence this particular robin is attempting to nest. Ed took a photograph of the robin enjoying the water in a bird bath in the Gschwind yard.

“The robin bathes every day, and loves the water like all robins do,” Sara wrote. “The robin has been here since the robins returned three months ago. I’m trying to keep it happy.” Since the robin is a regular visitor, I agree that they’re doing a good job keeping the bird happy, since it’s not shown any inclination to leave their yard.

Tom Brake, who lives in Abingdon, Virginia, contacted me through Facebook about a male purple martin with extensive white feathers residing at the purple martin colony he has established at his home.

Purple martins are the largest member of the swallow family in the United States. Like many other swallow species, they nest in colonies. Martins are cavity-nesting birds that readily accept hollow gourds or special purple martin condominiums for nesting.

“Currently I have nests in 43 compartments with 20 being active (eggs having been laid),” Tom wrote. “Last year I had 51 pairs, and I hope to get close to being back to 60 or 70 active pairs this year. The next two weeks will be the busy time for completion of nests and laying.”

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Photo by Tom Brake • A leucistic male purple martin perches with its mate, a typical female purple martin, near a hollow gourd they may use for nesting purposes.

As for the bird showing the white feathers, Tom has named him “Leuie” because the bird is an example of leucism, a condition related to albinism.

Albinism is a genetic, or inherited, condition resulting in a complete lack of production of pigmentation. Albino birds are, for the most part, extremely uncommon. I’ve heard of a variety of birds, ranging from hummingbirds and American robins to various ducks and swallows, that have a tendency to produce albino individuals.

Leucism is another genetic mutation that causes affected birds to grow feathers that are pale or whitish overall. A faint pattern may be visible. Leucism is also uncommon, but is more common that albinism. Both the robin in the Gschwind yard and the purple martin at Tom’s home are examples of leucistic birds.

Tom noted that “Leuie” is doing well so far. “He has a mate, but their first clutch of four eggs was either thrown out by a second year male martin or discarded by themselves because they sensed non-viability,” Tom wrote in a Facebook message. “Maybe the cold, wet weather had something to do with the loss.” He noted that the same thing happened recently to two other nests.

“Leuie and mate are still using their gourd, so I expect they will re-clutch,” Tom wrote. The term “re-clutch” means that Leuie’s mate will lay a new batch of eggs and Leuie will be ready to carry out his own paternal duties to help raise any resulting young.

Albinism and leucism are not the only conditions that can affect pigment in a bird’s feathers. Some birds have the opposite problem in that they produce too much pigment, resulting in a much darker bird than what would be typical. The plumage of such affected birds is described as melanistic, which is in stark contrast to an albino bird. With a melanistic bird, the feathers are much darker than usual because of an abundance of pigment. In rare albino birds, the opposite occurs and the lack of pigment in the feathers leave them looking white. Completely albino birds also tend to have red eyes. It’s probably better for a bird to be melanistic. Albino birds tend to stick out like sore thumbs, attracting the attention of predators.

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Photo by Ed Gschwind • Compare the leucistic American robin in the bird bath with the typical robin perched in a nearby chair. Albino birds are rather rare in nature.

I’ve only seen a few albino or partial albino birds in person, although I have observed videos and photographs of such birds. During a trip to Salt Lake City, Utah, in 2006, I observed an albino Brewer’s blackbird. An albino blackbird is almost an oxymoron. This particular blackbird had a white upper body and head and a black lower body. At first, I thought it might be a small tern, but closer observation — and identification of the birds with which it was associating — eventually confirmed that it was a Brewer’s blackbird, a common species in Salt Lake City.

Those observations remain my best looks at albino birds in the wild. I’ve also seen partial albinos, including an American Crow with white feathers in its wings that inhabited the woodlands and fields at my home for several years. I’ve also observed a couple of American goldfinches over the years that would probably qualify as leucistic birds.

A few years ago, I saw an albino Red-tailed hawk while driving between Erwin, Tennessee, and Asheville, North Carolina, on Interstate 26. The hawk was often present near the North Carolina Visitors Center. I’ve also heard from readers over the years about birds such as American goldfinches and downy woodpeckers exhibiting albino tendencies.

Albino-Hawk

Photo by Jean Potter • This partial albino red-tailed hawk was spotted for several years near the state line dividing northeast Tennessee and western North Carolina.

These issues involving the absence or abundance of pigment can complicate bird identification. After all, all-white birds, from snowy owls and tundra swans to great egrets and snow geese, do exist in nature. Even in these birds, however, there’s usually some other color present to break up the uniformity of the bird’s plumage. Keep in mind that such rarities as albino individuals of such common species as house finches and American robins can show up at your feeders or in your yard. It’s just another way birds constantly surprise us.

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To learn more about birds and other topics from the natural world, friend him on Facebook at https://www.facebook.com/ahoodedwarbler. He is always posting about local birds, wildlife, flowers, insects and much more.