Black-Capped Gnatcatcher, a New Breeding Bird for the United States; With a Key to the North American Species of Polioptila
Phillips AR, Speich S, Harrison W. 1973. Black-Capped Gnatcatcher, a New Breeding Bird for the United States; With a Key to the North American Species of Polioptila. The Auk. 90(2):257-262
On June 22, 1971 one of us (S.S.) collected a family of five gnatcatchers, including three fledglings, along Sonoita Creek, 8.5 km northeast of Nogales, Arizona. The adults, male and female were later determined on careful comparison to be black-capped gnatcatchers, and endemic species of northwestern Mexico never previously recorded in the United States. Hitherto the northernmost records had been east-southeast of Hermosillo, Sonora and near Ures, northeast of Hermosillo, localities approximately 240 and 210 km, respectively, south of Nogales. Thence, it ranges south to Colima.
- Type
- Journal Article
- Authors
- Phillips, Allan; Speich, Steven; Harrison, William
- Units
- SODN , TONT
- Keywords
- Avian Management, Biogeography, Birds, Breeding Birds, Inventory And Monitoring, Ornithology, Population Biology, Resource Management (Planning)