Image - 21 April 2016

Figure 2. Close up of the large ground finch Geospiza magnirostris

Close up of the large ground finch Geospiza magnirostris (illustrated here) that competed for food with the medium ground finch Geospiza fortis, on Daphne Major Island during a severe drought.

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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.

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