Yellow-rumped warbler Dendroica coronata

Identification Tips:

Adult male-eastern(Myrtle Warbler):

Basic, female and immature-eastern(Myrtle Warbler):

Adult male-western(Audubon's Warbler):

Basic, female and immature-western(Audubon's Warbler):

Similar species:

The male Yellow-rumped Warbler is quite distinctive with its yellow patches at the sides of the breast and black upper breast. Magnolia Warblers have yellow bellies. Females and immatures are less colorful and more difficult to identify. The often obvious yellow rump is brighter than other species with yellow rumps (Magnolia, Palm, and Cape May). When present, the yellow patches at the sides of the breast are not found in these other species. Cape May Warbler has finer and more extensive streaking on the breast and a yellow neck patch. Palm Warbler has yellow undertail coverts and actively pumps its tail. Magnolia Warblers have much more yellow below.

Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.