Blackpoll Warbler (Dendroica striata)
Above and below: My first-of-the-season Blackpoll Warbler, photographed in Washington Co., Maryland (9/8/2007). These images show two diagnostic fieldmarks to separate fall Blackpoll from Bay-breasted--faint streaking on the sides of the breast and white undertail coverts.
Below: The yellow feet of this weakly marked bird help confirm its ID as a Blackpoll Warbler (Fort Smallwood, 10/12/2008).
Below: A Blackpoll Warbler demonstrates its decidedly un-Bay-breasted features - lightly streaked breast, white undertail coverts, and yellow feet and legs. I also found it, which virtually eliminates the possibility that it would be a Bay-breasted! Photographed in Caroline Co., Maryland (10/2/2009).
Below: A Blackpoll Warbler in the morning flight on Assateague (5/15/2010).
Above and below: A Blackpoll Warbler on Assateague Island, Maryland (10/10/10).
Below: One of several especially confiding Blackpoll Warblers lingering at Fort Smallwood, Maryland (11/16/2010).
Listen to audio (Dorchester Co., Maryland, 5/8/2010) - with Common Yellowthroat and White-eyed Vireo
Below: A migrant Blackpoll Warbler refuels on Assateague Island, Maryland (10/16/2011).