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Abstract

Real del Mar, 10 km south of the international border along the coast of Baja California, Mexico, 19 February 2015. This photo of an adult female feeding a fledgling represents the first confirmation of Allen's Hummingbird nesting in Mexico and documents the continuing spread of Selasphorus sasin sedentarius. Formerly confined to the Channel Islands off southern California, this subspecies was discovered nesting on the Palos Verdes Peninsula, Los Angeles County, in 1966 and over the following 50 years has spread nearly throughout the urbanized areas of the coastal slope of southern California and now into Mexico, as reported in this issue of Western Birds (pp. 161-166) by Richard A. Erickson.