Black Vulture, Coragyps atratus, feed mainly on carrion. These birds and their relatives, the turkey vultures, are the garbage folks of the ecosystem. Black vultures lack vocal cords and only make occasional hisses or grunts. They defecate on their legs to cool down on hot days which is a process called urohidrosis. Both mother and father Black Vultures incubate 2 Pale gray-green eggs which are blotched with brown for 37-41 days. Both parents feed their young ones by regurgitation. The babies stay in the nest for about 2 months and may move to high areas nearby. They are capable of flight at about 75-80 days, however, the young may be partly dependent on their parents for several more months.