The eBird/Clements Checklist of Birds of the World: v2019. A Field Guide to Warblers of North America. Huntington Beach State Park, South Carolina, 20 January 2015 Otherwise short-distance to long-distance migrant, and in autumn moves later than do most other parulids. This species is a largely "facultative migrant" responding to changing food supplies. Song a variable and loosely structured rather slow, flat trill, often sounding two-parted and usually rising (but occasionally falling) at end.Usual call a sharp, emphatic “chup” or “chek” flight call a soft, clear, high-pitched “sip” or “tsee”.
Nests fequently parasitized by Brown-headed Cowbird Vocalisations Nest is a bulky cup of twigs, grasses and moss, lined with hair and feathers usually in a tree but sometimes on the ground. Audubon's group eat some fruit in the winter months. While in flight as they migrate, the birds will also use the chirping call to keep the flock together during their long journey.Myrtle Beach, South Carolina, USA, March 2021Ĭoniferous and mixed forests also winters in open area.ĭiet mostly insectivorous but will eat berries and other vegetation. Soon, the yellow rumps will be migrating back north to mate and raise a couple of broods. Consumption of these berries by the yellow rumps is beneficial for these plants since they will help disperse their seeds.Ī wintering flock of yellow-rumped warblers will frequently call out with a chirp to keep in contact with each other while foraging. Since this food source is also available further north, the birds don’t need to migrate so far south in search of food. Unlike other warblers, yellow-rumped warblers possess a special enzyme that allows them to digest the waxy coating covering the berries and thus receive nutrients from the berries. As protection from the harsh salt spray that blows in off the ocean, the berries are wrapped with a waxy coating. However, during the winter when the insects are hard to find, these birds will feast on the berries produced by wax myrtles (hence, the name myrtle warbler), bay trees and Virginia creeper. During much of the year, it will feed on a variety of abundant insects such as caterpillars, beetles, spiders, ants and mosquitoes. However, it can winter farther north than any other warbler due to its specially adapted digestion system. Like other songbirds, they will migrate south to spend the winter in milder climates. This plentiful, active, small songbird breeds in the dense coniferous forests of Alaska, Canada and in the western states.
We know spring has arrived when yellow-rumped warblers no longer frequent our bird feeders. It is thought that these two different types of yellow-rumps came about when they developed different physical characteristics after being separated by glaciers during the last ice age, 20,000 or so years ago. In the eastern half of the United States, the yellow-rumped subspecies is also known as the myrtle warbler and as the Audubon’s warbler in the western states. Learn how you can be in the Sponsor SpotlightĪffectionately known as “butter butts” because of their obvious yellow rump feathers, the birds seem to magically appear overnight in large numbers during late fall.
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