The bearded vulture (Gypaetus barbatus) is a very large bird of prey in the monotypic genus Gypaetus. It is vernacularly known as the Homa, a bird in Iranian mythology. The bearded vulture is the only known vertebrate whose diet consists of 70 to 90 per cent bone. It lives and breeds on crags in high mountains in Iran, southern Europe, East Africa, the Indian subcontinent, Tibet, and the Caucasus. The bearded vulture population is thought to be in decline; since 2014, it has been classified as near threatened on the IUCN Red List. Bearded vultures are 94 to 125 centimetres (37 to 49 inches) long, with a wingspan of 2.31 to 2.83 metres (7.6 to 9.3 feet). This bearded vulture was photographed carrying a piece of carrion in the Alps in Switzerland, where the species was reintroduced in the late 20th century after having become locally extinct in the early 20th century.Photograph credit: Giles Laurent
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