Darwin's finch
Darwin's finches are 13 or 14 different closely related species of finches Darwin discovered on the Galapagos Islands. He later used them as an example for speciation.The birds are all about the same size (10–20 cm). They mainly differ in the form of the bill. The bill is adapted to the food they eat. The birds are all brownish or black. Their behaviour differs as they have different song melodies.
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