The following account is a summary of the present knowledge of the birds of Coahuila. Some 500 specimens from Coahuila in the Museum of Natural History at the University of Kansas are the basis for this report; these are supplemented by records of birds previously listed from the State.
Migrants of the eastern flyway as well as migrants associated with western North America pass through this section of Coahuila. The following breeding birds are associated with this province: Goshawk, Band-tailed Pigeon, Thick-billed Parrot, Golden-fronted Woodpecker, Ladder-backed Woodpecker (D. s. giraudi), Pine Flycatcher, Buff-breasted Flycatcher, Vermilion Flycatcher (P. r. mexicanus), Steller's Jay, Scrub Jay, Mexican Chickadee, Black-crested Titmouse (P. a. atricristatus), Cactus Wren (C. b. guttatus), Robin, Blue-gray Gnatcatcher (P. c. amoenissima), Hutton's Vireo (V. h. stephensi), Bell's Vireo (V. b. medius), Hartlaub's Warbler, Summer Tanager (P. r. cooperi), Pine Siskin, Rufous-capped Atlaptes, and Black-throated Sparrow (A. b. grisea).
The Chihuahua-Zacatecas Biotic Province.--This province in Coahuila covers the arid, interior, western desert area; it consists of rolling plains wit