If the colors of the finches' feathers are important, an additional column can be added to the table. Sharp-beaked ground finch Ground finches Crushing bills Seed eaters Small ground finch Ground ...

So the adaptation to a changed environment led to a larger-beaked finch population in the following generation. Adaptation can go either way, of course. As the Grants later found, unusually rainy ...

Scrambling over loose rocks to reach this plateau, he spied a bizarre scene – pecking away at the flight feathers of a Nazca booby was a sharp-beaked ground finch. With scarce food alternatives, it ...

For example, the cactus finch has a long beak that reaches into blossoms, the ground finch has a short beak adapted for eating seeds buried under the soil, and the tree finch has a parrot-shaped ...

Photographer Thomas P Peschak had the rare opportunity to visit the island and witness the blood-drinking behaviour of these sharp-beaked birds ... survival on Wolf Island is tougher for the ground ...