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  • Cracking the Hardest Nut

    Cracking the Hardest Nut

    Image of the Week

    The Large Ground-Finch (Geospiza magnirostris) has the largest beak of all Darwin’s finches on the Galápagos Islands.

  • The Lone Anole

    The Lone Anole

    Image of the Week

    The Plymouth anole (Anolis lividus) lizard is found only on the Caribbean island of Montserrat—and it is the only anole species living there.

  • Wallace's Golden Birdwing Butterfly

    Wallace's Golden Birdwing Butterfly

    Image of the Week

    The golden birdwing provided a striking clue to the natural origin of species.