The lesser yellow-headed vulture also known as the savannah vulture, is a species of bird in the New World vulture family Cathartidae. It was considered to be the same species as the greater yellow-headed vulture until they were split in 1964. It is found in Mexico, Central America, and South America in seasonally wet or flooded lowland grassland, swamps, and heavily degraded former forest. It is a large bird, with a wingspan of 150–165 cm (59–65 in). The body plumage is black, and the head and neck, which are featherless, are pale orange with red or blue areas. It lacks a syrinx, so therefore its vocalizations are limited to grunts or low hisses.
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The lesser yellow-headed vulture feeds on carrion and locates carcasses by sight and by smell, an ability which is rare in birds. It is dependent on larger vultures, such as the king vulture, to open the hides of larger animal carcasses as its bill is not strong enough to do this. Like other New World vultures, the lesser yellow-headed vulture utilizes thermals to stay aloft with minimal effort. It lays its eggs on flat surfaces, such as the floors of caves, or in the hollows of stumps. It feeds its young by regurgitation.
This is the lightest and smallest of the extant New World vultures despite sometimes measuring at least as long and longer winged than black vultures.
This is the lightest and smallest of the extant New World vultures despite sometimes measuring at least as long and longer winged than black vultures.
The lesser yellow-headed vulture is a bird of Least Concern according to the IUCN, with an estimated global range of 7,800,000 km2 (3,000,000 sq mi) and a population of between 100,000 and 1,000,000 individuals (the fact that the bands in the range of the population are so wide shows how little we know about them. Its population trend appears to be stable.
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