Rather less well studied than its sister-species, the White-throated Magpie-Jay (Calocitta formosa), the Collie’s Magpie-Jay, or Black-throated Magpie-Jay, as it is better known, is confined to northwest Mexico. At the southernmost terminus of its range, in Jalisco and Colima, hybrids between the two magpie-jays are locally quite common, which has led to the suggestion that it would be better to recognize just a single species. Additionally, the genus Calocitta, of which the magpie-jays are the sole representatives, is sometimes subsumed within Cyanocorax. The Black-throated Magpie-Jay clearly differs from the White-throated in its all-black face and throat, with blue patches above and below the eyes, and more expansive crest. Hybrids between them possess intermediate plumages. The present species prefers scrubby vegetation, thorn forest, and riparian areas, from the lowlands to at least 1800 m, and although usually considered to be resident, birds have occasionally wandered as far north as southern Arizona.