Cape May Warbler (Dendroica tigrina)
Above and below: Cape May Warblers in Prince George's Co., Maryland (9/19/2009). The male above is stunning, but these drab females might sneak around in the late fall Myrtle flocks on Assateague.
Below: Another one for the undertail collection - male Cape May Warbler.
Below: Cape May Warblers on Assateague Island, Maryland (10/16/2011).
Below: A poor photo that shows a useful field mark - Cape May Warbler at Conowingo Dam, Harford Co., Maryland (10/2006).
Below: A Cape May Warbler found along the edge of Jug Bay, Prince George's Co., Maryland (9/20/2008).
Below: A drab Cape May Warbler on Assateague Island (10/16/2011) - an easy miss right now among the building numbers of Myrtles.