![]() When summer comes and courtship begins the male will accompany the female everywhere, calling as he fluffs up his side feathers and raises his wings and colorful crown feathers. In the winter, because they can digest the wax in berries, they can eat berries of bayberry, juniper, wax myrtle and poison ivy. The diet mainly consists of insects and berries. In the wall and winter they prefer open woods and shrubby habitats like coastal vegetation, parks and residential areas. In Summer, Yellow-rumped Warblers can be found in open coniferous forests and edges and sometimes deciduous forests. Where the two subspecies’ breeding ranges overlap, like the Canadian Rockies, intermediate forms can occur. The female Audubon’s also lacks the dark ear patch that can be found on the Myrtle. The wings of the male Audubon’s Warbler is more white than that of the Myrtle Warbler. One difference between these two subspecies is that the Audubon’s throat is yellow, while the Myrtle’s throat is white. There are two distinct subspecies of the Yellow-rumped Warbler: the Myrtle Warbler, which can be found in the eastern US and Canada’s boreal forest, and the Audubon’s Warbler, which is found in the western US in the more mountainous regions. Currently, during the winter, both sexes are a paler brown with a bright yellow rump and some yellow on the sides. The males are shaded while the females are more dull and may even have some brown. In the summer, both male and females are gray with some white in the wings and yellow on the face, sides, and rump. They have a large head, sturdy bill and a long, narrow tail. Profile by Gislaine Peters: The Yellow-rumped Warbler is fairly large for a warbler and is about the size of a Black-capped Chickadee. Please let us know if you have any special requests of birds you would like to learn more about.Seasonal Occurrence: Abundant mid-October through early April. When possible we will use photographs taken by our members. This blog post is part of a series SIB will publish on a regular basis to feature birds seen in the area, both migratory and permanent residents. If you would like to learn more about this bird visit The Cornell Lab of Ornithology – All About Birders: Yellow-rumped Warbler and Birds of Seabrook Island: Yellow-rumped Warbler Their song is a loose trill, but rising in pitch or dropping toward end and the call note is a loud “chek.”Ī group of warblers has many collective nouns, including a “bouquet”, “confusion”, “fall”, and “wrench” of warblers. Their yellow rump and white tail patches are very noticeable while flying. Their flight is agile and swift and the birds often call as they change direction. Yellow-rumped warblers are active and noisy birds. They also eat wild seeds from beach grasses and goldenrod and may come to feeders to eat sunflower seeds, raisins, peanut butter and suet. You might see them acting like Flycatchers as they leap off perches flying up to catch a passing insect. In the spring/summer these warblers are found in mature coniferous and mixed coniferous-deciduous woodlands feeding on insects including caterpillars, ants, leaf beetles, grasshoppers and spiders. This makes them a very winter hardy bird allowing them to winter farther north than other warblers. This bird has unique gastrointestinal traits that allow it to subsist on this unusual food source. During this time they mainly eat berries and fruits, particularly wax-coated berries of bayberries and wax myrtles. In winter, Yellow-rumped warblers can be found in open pine and pine-oak forests and dunes where bayberries are common. The female is brownish with the similar patterns. Its rump, crown and small area at the sides of the breast are yellow. In the spring before they leave Seabrook Island, the male is dark blue-gray upper parts white throat, breast and belly are white and heavily streaked with black. In winter, the females, males and young are a paler streaked gray-brown, have bright yellow rumps and usually yellow side patches. The Yellow-rumped is medium-sized warbler with a long narrow tail and stout dark bill. This bird constantly “chirps” which is a contact call that keeps the flock together. You will see them in small flocks in open woodlands and brushy habitats. ![]() They arrive in November and depart in April. On Seabrook, Butter Butts are our most obvious and widely distributed winter Warbler. It was formally called Myrtle Warbler in the East because it is the only Warbler able to digest the wax-coated berries of the Wax Myrtles. The Yellow-rumped Warbler is sometimes referred to as “Butter Butt” due to its bright yellow rump. Yellow-rumped Warblers are one of the most common warblers in North America and abundant on Seabrook Island from fall through spring. Yellow-rumped Warbler – Setophaga coronata
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