"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."@en . . . . . . . "IUCN3.1" . . . . "LC" . "Black-tailed gnatcatcher"@en .