Professors Rosemary and Peter Grant noticed that this male proceeded to mate with a female of one of the local species, a medium ground finch, producing fertile young. Almost 40 years later ...

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 ...

Finally, Podos and his team returned to the specific population of Darwin's medium ground finches and played them the calls of the future finches. "We found that there were no changes in the ...

Compare the two tables. 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 ...