"Blue-gray Gnatcatcher (Poliptila caerulea). The blue-gray gnatcatcher, Polioptila caerulea, is a very common migratory insectivorous bird inhabiting woodlands of the United States." -Whitney, 1911

Blue-Gray Gnatcatcher

"Blue-gray Gnatcatcher (Poliptila caerulea). The blue-gray gnatcatcher, Polioptila caerulea, is a very…