There are now at least 13 species of finches on the Galapagos Islands, each filling a different niche on different islands. All of them evolved from one ancestral species, which colonized the ...

One of the most common winter sparrows, the white-crowned typically occurs in flocks, which may involve more than 100 birds. They feed in short grass or open areas adjacent to woodlands ...

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 ...