Aegypius
| Cinereous vulture | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Accipitriformes |
| Family: | Accipitridae |
| Subfamily: | Aegypiinae |
| Genus: |
Aegypius Savigny, 1809 |
| Species: | A. monachus |
| Binomial name | |
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Aegypius monachus (Linnaeus, 1766) |
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The cinereous vulture (Aegypius monachus) is a large raptorial bird that is distributed through much of Eurasia. It is also known as the black vulture, monk vulture, or Eurasian black vulture. It is a member of the family Accipitridae, which also includes many other diurnal raptors such as kites, buzzards and harriers. It is one of the two largest Old World vultures, attaining a maximum size of 14 kg, 1.2 m long and 3.1 m across the wings.
The genus name Aegypius is a Greek word (αἰγυπιός) for 'vulture', or a bird not unlike one; Aelian describes the aegypius as "halfway between a vulture (gyps) and an eagle". Some authorities think this a good description of a lammergeier; others do not. Aegypius is the eponym of the species, whatever it was. The English name 'black vulture' refers to the plumage colour, while 'monk vulture', a direct translation of its German name , refers to the bald head and ruff of neck feathers like a monk's cowl. '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.
This bird is an Old World vulture, and is only distantly related to the New World vultures, which are in a separate family, Cathartidae, of the same order. It is therefore not directly related to the much smaller American black vulture (Coragyps atratus) despite the similar name and coloration.
The cinereous vulture is believed to be the largest true bird of prey in the world. The condors, which may be marginally larger, are now generally considered unrelated to the true raptors. The Himalayan griffon vulture (Gyps himalayensis) is the only close extant rival to the size of the cinereous, with a similar average wingspan, weight and a longer overall length, thanks to a distinctly longer neck. The largest cinereous vultures exceed the weight and wingspan of the largest Himalayan griffon, and the cinereous is the larger species going on standard measurements. Females are slightly larger than males. This huge bird measures 98–120 cm (3 ft 3 in–3 ft 11 in) long with a 2.5–3.1 m (8 ft 2 in–10 ft 2 in) wingspan. Males can weigh from 6.3 to 11.5 kg (14 to 25 lb), whereas females can weigh from 7.5 to 14 kg (17 to 31 lb). It is thus one of the world's heaviest flying birds. Despite limited genetic variation in the species, body size increases from west to east, with the birds from southwest Europe (Spain and south France) averaging about 10% smaller than the vultures from central Asia (Manchuria, Mongolia and northern China). Among standard measurements, the wing chord is 73–89 cm (29–35 in), the tail is 33–41 cm (13–16 in) and the tarsus is 12–14.6 cm (4.7–5.7 in).
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