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Described as species only as recently as the late 1950s, Sinaloa Crow is, as its name suggests, endemic to northwestern Mexico, although its distribution is not actually confined to the state of Sinaloa. It differs from Tamaulipas Crow (Corvus imparatus) of northeastern Mexico in its longer tail, higher-pitched vocalizations, and genetically. Like the latter species, Sinaloa Crow is principally a bird of low elevation semiopen areas, including those in close proximity to humans. It seems to be less gregarious than Tamaulipas Crow, but like the latter it often visits rubbish dumps to feed, although this species also frequents intertidal areas on a regular basis, where it preys on marine invertebrates, among them crabs and shellfish.