The World Around Us

Darwin’s Finches from Galápagos Islands showing the the differences in the size and shape of their beaks, which have adapted to different food sources.

Charles Darwin collected thirteen specimens of finches during his stay on the Galápagos Islands. The birds are brownish or black and about the same size (10–20 cm), the differences between them being the size and shape of their beaks, which have adapted to different food sources.

Credit: Gould, John (1845)