Botteri's Sparrow (Peucaea botterii) Occurs in Northern Coahuila, Mexico

摘要

Botteri's Sparrow (Peucaea botterii) occurs widely in the shrub-grasslands of southern North America. We report a breeding population of the species in the Sierra de la Encantada of northern Coahuila, Mexico, ～80 km from the Big Bend area of Texas and >300 km from the nearest previously known breeding range in southern Coahuila and central Chihuahua. We captured three individuals, which show a mostly gray dorsal coloration, suggestive of the texana subspecies, occurring from southern Texas to northern Veracruz. The exact affinity of the northern Coahuila population still needs to be ascertained. The presence of Botteri's Sparrow in northern Coahuila may have been overlooked previously or may be part of a (temporary) range expansion. More work is needed to map the occurrence of Botteri's Sparrow in northcentral Mexico grasslands.