High Quality Content by WIKIPEDIA articles! The Black-tailed Gnatcatcher (Polioptila melanura) is a small, insectivorous bird which ranges throughout the Sonoran and Chihuahuan Deserts of the southwestern United States and northern Mexico. It is nonmigratory and found in arid desert areas year-round. The Black-tailed Gnatcatcher was described by American ornithologist George Newbold Lawrence in 1857. Meaning 'black-tailed', its specific name is derived from the Ancient Greek melano- 'black' and oura 'tail'.

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