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The turkey vulture was first formally described by Carl Linnaeus as Vultur aura in his 1758 10th edition of Systema Naturae, and characterised as "V. fuscogriseus, remigibus nigris, rostro albo" ("brown-gray vulture, with black wing flight feathers and a white beak"). [11]
The black vulture is a fairly large scavenger, measuring 56–74 cm (22–29 in) in length, with a 1.33–1.67 m (52–66 in) wingspan. [30] Weight for black vultures from North America and the Andes ranges from 1.6 to 3 kg (3.5 to 6.6 lb) but in the smaller vultures of the tropical lowlands it is 1.18–1.94 kg (2.6–4.3 lb).
'Cinereous vulture' (Latin cineraceus, ash-coloured; pale, whitish grey), was a deliberate attempt to rename it with a new name distinct from the American black vulture. [4] This bird is an Old World vulture, and as such is only distantly related to the New World vultures, which are in a separate family, Cathartidae, of the same order.
It is a large black vulture with a ruff of white feathers surrounding the base of the neck and, especially in the male, large white patches on the wings. The head and neck are nearly featherless, and are a dull red color, which may flush and therefore change color in response to the bird's emotional state.
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The American black vulture and the king vulture appear in a variety of Maya hieroglyphs in Mayan codices. The king vulture is commonly represented, with its glyph being easily distinguishable by the knob on the bird's beak and by the concentric circles that represent the bird's eyes. [55]
The Rüppell's vulture is a large vulture, noticeably outsizing the closely related white-backed vulture, with which they often occur in the wild. Adults are 85 to 103 cm (33 to 41 in) long, [ 3 ] [ 6 ] with a wingspan of 2.26 to 2.6 m (7 ft 5 in to 8 ft 6 in), and a weight that ranges from 6.4 to 9 kg (14 to 20 lb).
The white-backed vulture (Gyps africanus) is an Old World vulture in the family Accipitridae, which also includes eagles, kites, buzzards and hawks.