Greater Antillean Bullfinch (IMAGE)

Harvard University

Greater Antillean Bullfinch

Caption

Greater Antillean bullfinches (Loxigilla violacea) use their deep and wide beaks to crush seeds and hard fruits. Harvard researchers have found that the molecular signals that produce a range of beak shapes in birds show even more variation than is apparent on the surface.

Credit

Photo by José M. Pantaleón

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