This image shows four different finches Charles Darwin found while on the Galapagos Islands. To eat seeds, nuts, fruit, or nectar birds need to have beaks with different features. To crack the shells of nuts, birds need a very large, thick, and strong beak. Birds that eat seeds also need to have a strong beak to break shells, but not as large or thick as the beaks needed for breaking open nuts. To eat nectar, birds need a long and thin beak that can fit into flowers. Which of these would be best adapted to eating primarily nuts?

Question

This image shows four different finches Charles Darwin found while on the Galapagos Islands. To eat seeds, nuts, fruit, or nectar birds need to have beaks with different features. To crack the shells of nuts, birds need a very large, thick, and strong beak. Birds that eat seeds also need to have a strong beak to break shells, but not as large or thick as the beaks needed for breaking open nuts. To eat nectar, birds need a long and thin beak that can fit into flowers. Which of these would be best adapted to eating primarily nuts?

Responses
A Geopiza fortisGeopiza fortis
B Geopiza parvulaGeopiza parvula
C Certhidea olivaceaCerthidea olivacea
D Geospiza magnirostrisGeospiza magnirostris

Answer 1