Solid black cap, white cheek, and black-streaked back and underparts make the breeding-plumaged male unmistakable. In all other plumages, however, the Blackpoll Warbler is much plainer and subject to confusion with similar plumages of other warblers that show two white wing bars and an overall yellowish or greenish coloration, with or without some streaking on the sides. The white undertail coverts are a useful mark; consult field guides for other identification clues.

 

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