Yellow-crown Warbler

Flashing its trademark yellow rump patch as it flies away, calling check for confirmation, this is one of our best-known warblers. While most of its relatives migrate to the tropics in fall, the Yellow-rump, able to live on berries, commonly remains as far north as New England and Seattle; it is the main winter warbler in North America. Included in this species are two different-looking forms, the eastern 'Myrtle' Warbler and western 'Audubon's' Warbler.