leaving mainly large, tough seeds that the finches normally ignore. Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for ...

The medium ground finch <i>Geospiza fortis</i> (illustrated here) diverged in beak size from the large ground finch (<i>Geospiza magnirostris</i>) on Daphne Major Island, Gal&aacute;pagos ...

This gene is most strongly expressed in the large ground finch (Geospiza magnirostris), which uses its robust beak to crack open large seeds and nuts. In other finches, a gene expresses a protein ...

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 ...