a yellow warbler setophaga petechia perched on a branch against a blue sky singing with beak open, john heinz national wildlife

adult america animal avian beak beautiful bill bird birdwatching blue branch breast bright colorful environment fauna feather feathers heinz john male national native natural nature ornithology outdoor outdoors pennsylvania perched petechia plumage portrait pretty refuge setophaga singing sky songbird states streaked tree united usa warbler wild wildlife yellow