Ecology and Behavior
The Greater Yellow-headed Vulture roosts on high, exposed dead trees to observe surrounding terrain. When flying, it travels in pairs or alone and is rarely found in groups. Flight is heavy and steady. It flies with its wings held flat or very slightly above horizontal, in what is called the dihedral position. The flight of the Greater Yellow-Headed is an example of static soaring flight, which uses thermals to maintain altitude without the need to flap its wings. The Greater Yellow-headed Vulture also has the unusual habit of urohydrosis, in which it urinates or defecates on its legs to cool them evaporatively. This behavior is exhibited by storks and New World vultures.
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