10,000 Birds
JULY 10, 2012
Rueppell’s (facing left) and White-backed (three birds facing right) Vultures have worryingly leapt two categories from Near-Threatened to Endangered. An adult (left) and subadult (right) White-backed Vulture with full crops after feeding on the remains of a Lion kill, Ndutu, Tanzania by Adam Riley.
10,000 Birds
DECEMBER 13, 2011
Males of this species are more brightly colored in their non-breeding winter plumage. Greater Double-collared Sunbird (right) is less common and more localized than its smaller cousin. The Southern (or Lesser) Double-collared Sunbird (left) is an often abundant species that is usually first detected by its cheery song.
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