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Rüppell's Vultures are highly social, roosting, nesting, and gathering to feed in large flocks. They can travel fast at need, cruising at up to 35 kilometres per hour (22 mph), and will fly as far as 150 kilometres (93 mi) from a nest site to find food. Rüppell's Vultures commonly fly at altitudes ranging up to 6,000 metres (19,700 ft) and have been considered to be the world's highest flying bird after a Rüppell's Vulture was confirmed to have been ingested by a jet engine of an airplane flying over Abidjan, Côte d'Ivoire on November 29, 1973 at an altitude of 11,000 metres (36,100 ft). Rüppell's Vultures have a specialized variant of the hemoglobin alphaD subunit; this protein has a high affinity for oxygen, which allows the species to take up oxygen efficiently despite the low partial pressure in the upper troposphere.Rüppell's Vultures are creatures of the more arid and mountainous areas of Africa: particularly semi-desert and the fringes of deserts.
Adults are close to 1 metre (3.3 ft) in length, with a wingspan of around 2.6 metres (8.5 ft), and a weight that usually ranges from 7 to 9 kg (15 to 20 lb). Both sexes are alike: mottled brown or black overall with a whitish-brown underbelly and thin, dirty-white fluff covering the head and neck. The base of the neck has a white collar, the eye is yellow or amber, the crop patch deep chocolate-brown. Silent as a rule, they become vocal at the nest and when at a carcass, squealing a great deal.for more animals..
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