a common yellowthroat warbler sings on top of a tree

common yellowthroat canary warbler bird birdsong birdwatching black blackmasked blue call chirp fauna forest green isolated leaf leafy leaves people one animal avian beak bill ornithology passerine perch perched profile sing singing single sit sky solitary songbird trill woodland yellow geothlypis trichas illinois midewin national tallgrass prairie united states county