Phylogeny of Old World Vultures
Old World vultures are found in Africa, Asia, and Europe. They are classified with the eagles, hawks, and kites in the family Accipitridae of the order Falconiformes. Within the family, the vultures are in two groups - subfamily Gypaetinae and subfamily Aegypiinae.
Gypaetinae includes the palm nut vulture (Gypohierax angolensis), lammergeier or bearded vulture (Gypaetus barbatus), and Egyptian vulture (Neophron percnopterus); according to DNA sequence comparisons, these are more closely related to the honey buzzards (genus Pernis) than to anything else in the family. Aegypiinae, which includes the other thirteen Old World vultures, have an ancestor in common with a number of other non-vultures in the Accipitridae family, including Buteo (hawks), Aquila (eagles), Haliaeetus (sea eagles) and Circaetus (snake eagles).
The thirteen Aegypiinae vultures are: lappet-faced vulture (Torgos tracheliotus), Eurasian black vulture (Aegypius monachus), white-headed vulture (Trigonoceps occipitalis), red-headed vulture (Sarcogyps calva), hooded vulture (Necrosyrtes monachus), and eight species in genus Gyps - griffon vulture (Gyps fulvus), Indian white-rumped vulture (Gyps bengalensis), Rüppell's vulture (Gyps rueppelli), long-billed vulture (Gyps indicus), slender-billed vulture (Gyps tenuirostris), Himalayan griffon vulture (Gyps himalayensis), white-backed vulture (Gyps africanus), and cape griffon (Gyps coprotheres).