Gnatcatcher
Gnatcatcher, a small woodland bird that snaps up tiny insects while in flight. The blue-gray gnatcatcher ranges over North America east of the Rockies and south of Ontario. It is about five inches (13 cm) long, is blue-gray above and ashy-white below, and has a white ring around its eye. The long black tail, edged with white, is often cocked like a wren's. The female lays four to five pale blue eggs in a cup-shaped nest. The black-tailed gnatcatcher is native to the desert and scrubland from southern California to Mexico. It has a darker tail than the blue-gray gnatcatcher. The black-capped gnatcatcher lives in Asia.
Gnatcatchers belong to the family Sylviinae. The blue-gray gnatcatcher is Polioptila caerulea; black-tailed, P. melanura; black-capped, P. nigriceps.