Listening to a Continent Sing

Near a beaver pond at the Finley refuge, a black-headed grosbeak sings from the treetop as two warbling vireos call and sing while battling over apparent ownership of the grosbeak's tree.

Background

Two warbling vireos calling and singing as they squabble over something; orange-crowned warbler, black-throated gray warbler, common yellowthroat, Swainson's thrush

Photo by Robert Royse