For Dusty, the Cassin’s finch is a species that represents the edge of the sagebrush and the tall evergreen forests of the ...

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 ...

The Grants study the evolution of Darwin's finches on the Galapagos Islands. The birds have been named for Darwin, in part, because he later theorized that the 13 distinct species were all ...

The attractive house finch is one of the more common and recognizable species throughout the United States. Originally a “western” species of semiarid environments, it was introduced in the ...

Common and hoary redpolls are 2 closely related finches of the boreal forest and Arctic tundra scrub. The common is the more widespread species of the 2, usually inhabiting subarctic forest during ...

The different finch species on the islands are closely related to each other, but show wide variations in beak and body size and feeding behaviour. In particular, changes to the size and shape of the ...