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The turkey vulture, Cathartes aura, also known in North America as the turkey buzzard, is a bird found throughout most of the Americas. One of three species in the genus Cathartes, in the family Cathartidae, it is the most common of the New World vultures, ranging from southern Canada to the southernmost tip of South America. It inhabits a variety of open and semi-open areas. It has dark brown to black plumage, a featherless, purplish-red head and neck, and a short, hooked, ivory-colored beak. It is a scavenger and feeds almost exclusively on carrion. It finds its meals using its sense of smell, flying low enough to detect the gases produced by the beginnings of the process of decay in dead animals. In flight, it uses thermals to move through the air, flapping its wings only infrequently. Lacking a syrinx—the vocal organ of birds—its only vocalizations are grunts or low hisses. It nests in caves, hollow trees, or thickets, generally raising two chicks each year, which it feeds by regurgitation.