The Galapagos Islands, 2006 & 2008

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A juvenile small ground finch (Geospiza fuliginosa), on Santa Cruz Island.  In addition to the mockingbirds, the finches are the only bird family on the islands which has evolved into diverse species (13 of them) from a single ancestor.  The most significant variation among the finches is the size and shape of their beaks, which have adapted to different sorts of food.
Copyright © 2008 John Van de Graaff

A juvenile small ground finch (Geospiza fuliginosa), on Santa Cruz Island. In addition to the mockingbirds, the finches are the only bird family on the islands which has evolved into diverse species (13 of them) from a single ancestor. The most significant variation among the finches is the size and shape of their beaks, which have adapted to different sorts of food.

Bird Photographs by John Van de Graaff