A turkey vulture standing on the ground can ... of the head contrasts with the ivory bill and dark feather ruff on the neck. Juvenile: the skin of the head is dark, the bill dark with a pale ...

What is the white-backed vulture? The white-backed vulture is the most common and widespread vulture in sub-Saharan Africa. It is recognizable by its dark-brown face, long, white neck, and of ...

Thus, in the 1970s, biologists from the Frankfurt Zoological Society and elsewhere decided to try to reestablish a bearded vulture population in the Alps by introducing captive-bred birds into the ...