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Figure 3. Diversification of beak morphology

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Figure 3. Diversification of beak morphology

The most characteristic feature of Darwin’s finches is the diversification of beak morphology that has allowed these species to expand their utilization of food resources in Galápagos, here illustrated by the gray warbler finch (Certhidea fusca), the common cactus finch (Geospiza scandens) and the large ground finch (Geospiza magnirostris).
© B. Rosemary Grant
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  • Evolution in action detected in Darwin’s finches

    The most characteristic feature of Darwin’s finches is the diversification of beak morphology that has allowed these species to expand their utilization of food resources in the Galápagos archipelago. A team of scientists from Uppsala University and Princeton University has now identified a gene that explains variation in beak size within and among species. The study is published in Science.