Distribution

Tamaulipas Crow is almost entirely restricted to northeastern Mexico. It occurs in the lowlands of northeastern Mexico in Tamaulipas, eastern Nuevo León, southeastern San Luis Potosí, and northern Veracruz (Miller et al. 1957, Howell and Webb 1995). Tamaulipas Crow also recently colonized extreme south Texas (see Historical Changes), where it primarily is present as a nonbreeding visitor, but has bred in some numbers. Otherwise Tamaulipas Crow is resident throughout its range.

The elevational range of Tamaulipas Crow is from the lowlands up to 800-900 m (Howell and Webb 1995, Parker et al. 1996) .

Endemic to the Americas.

Habitats of Tamaulipas Crow are described "semiarid brushland, riparian vegetation, native villages, corrals, ranches, farmland, and garbage dumps" (Oberholser 1974) and as "open and semiopen areas with trees and hedges, towns, rubbish dumps, etc." (Howell and Webb 1995).

Until ca 1960, Tamaulipas Crow was not reported from the flat lower stretches of the Rio Grande delta in northern Tamaulipas, Mexico (Oberholser 1974). By the late 1960s, Tamaulipas Crow became a regular nonbreeding visitor, sometimes in large numbers (flocks of up to 2300 birds), to extreme south Texas (Oberholser 1974, Arvin et al. 1975). Breeding of Tamaulipas Crow in south Texas was not reported until 1989, however, when a small colony of five nests was discovered (Lasley and Sexton 1989). Although Tamaulipas Crow appeared poised to become a resident breeding species in south Texas, its numbers began to decline there by the late 1990s, and it currently is considered to be rare in south Texas and "barely hanging on in the United States" (Brush 2005).

None reported.