Mazatlán, Sonora, Mexico.
Often placed in Lophortyx. Sometimes considered conspecific with C. squamata, but genetic study supports treatment as separate species#R. Race vanderbilti overlooked in almost all recent treatments (including HBW), possibly owing to assumption that the population on the islands (Tres Marías) had been introduced#R, but no known evidence of introduction. Race languens, known only from type locality (in W Chihuahua, Mexico), sometimes subsumed within bensoni; impedita sometimes synonymized with teres. Proposed form leucoprosopon was described from aviary birds, probably hybrids between present species and C. gambelii#R. Six subspecies normally recognized.
Food and feeding
Status and conservation
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