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The Cathartiformes / k ə ˈ θ ɑːr t ɪ f ɔːr m iː z / was a former order of scavenging birds which included the New World vultures and the now-extinct Teratornithidae. [1] Unlike many Old World vultures , this group of birds lack talons and musculature in their feet suitable to seize prey.
This analysis argues that New World vultures should either be a part of a new order Accipitriformes [19] or part of an order (Cathartiformes) closely related to, but distinct from, other birds of prey. [18] New World vultures are a sister group to Accipitriformes, [18] a group consisting of Accipitridae, the osprey and secretarybird. [20]
Cathartiformes Accipitriformes Accipitrimorphae is a clade of birds of prey that include the orders Cathartiformes ( New World vultures ) and Accipitriformes (diurnal birds of prey such as eagles, hawks, osprey and secretarybird ).
Among them is the family Cathartidae (New World vultures) which the American Ornithological Society (AOS), the Clements taxonomy, and BirdLife International's Handbook of the Birds of the World place in its own order, Cathartiformes.
The DNA-based proposal and the NACC and IOC classifications include the New World vultures in the Accipitriformes, [7] [11] while the SACC classifies the New World vultures as a separate order, the Cathartiformes. When Cathartiformes is considered a separate order, sister to Accipitriformes, Accipitriformes sensu lato is called Accipitrimorphae.
Species C. aura (Linnaeus, 1758); C. burrovianus Cassin, 1845; C. melambrotus Wetmore, 1964; Approximate distribution of the genus Cathartes.Green indicates that at least one species is resident year-round and yellow shows areas where one species, the turkey vulture, is a summer-only breeding visitor.
The greater yellow-headed vulture (Cathartes melambrotus), also known as the forest vulture, [2] is a species of bird in the New World vulture family Cathartidae. It was considered to be the same species as the lesser yellow-headed vulture until they were split in 1964. [3]
The South American Classification Committee has removed the New World vultures from Ciconiiformes and instead placed them in Incertae sedis, but notes that a move to Falconiformes or Cathartiformes is possible. [13] Like other New World vultures, the king vulture has a diploid chromosome number of 80. [17]