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  • Dad Feathers

    Dad Feathers

    Image of the Week

    The male peafowl, or peacock, invests a lot in his appearance.

  • How Animals Use Sound to Communicate

    How Animals Use Sound to Communicate

    Click & Learn

    Using elephants, finches, bats, and moths, as case studies, explore different aspects of how animals use sound to communicate.

  • Mozambique Mounds

    Mozambique Mounds

    Image of the Week

    Termite mounds in central Mozambique appear as regularly spaced islands of dark-green vegetation in a sea of grassland. 

  • Schooling Behavior of Stickleback Fish from Different Habitats

    Schooling Behavior of Stickleback Fish from Different Habitats

    Data Point

    A team of scientists studied the schooling behavior of threespine stickleback fish by experimentally testing how individual fish responded to an artificial fish school model.

  • The Art of Hiding

    The Art of Hiding

    Image of the Week

    Animal mimics evolved markings that make them look either like other animals or inanimate objects.

  • 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.

  • Lizard Evolution Virtual Lab

    Lizard Evolution Virtual Lab

    Virtual Lab

    In the Lizard Evolution Virtual Lab students explore the evolution of the anole lizards in the Caribbean by collecting and analyzing their own data.  

  • Holding on to Your Mother

    Holding on to Your Mother

    Image of the Week

    Infant lemurs hitch a ride through the forest by holding on to their mother’s tummy or riding piggyback.

  • Grasping Your Inner Monkey

    Grasping Your Inner Monkey

    Image of the Week

    The shape of our hands comes from tree-dwelling ancestors.

  • Beaks As Tools: Selective Advantage in Changing Environments

    Beaks As Tools: Selective Advantage in Changing Environments

    Activity

    This classroom experiment supports the film The Origin of Species: The Beak of the Finch. Students collect and analyze data to learn why even slight variations in beak size can make the difference between life and death.

  • Using DNA to Explore Lizard Phylogeny

    Using DNA to Explore Lizard Phylogeny

    Activity

    This activity supports the film The Origin of Species: Lizards in an Evolutionary Tree. Students are guided to sort the lizard species by appearance, then generate a phylogenetic tree using the lizards’ DNA sequences to evaluate whether species that appear similar are closely related to each other.

  • Anole Lizards: An Example of Speciation

    Anole Lizards: An Example of Speciation

    Animation

    (2 min 38 sec) This animation features the anole lizards as an example of how a single species can split and multiply into many different species with distinct traits.

  • Film Guides: The Origin of Species: Lizards in an Evolutionary Tree

    Film Guides: The Origin of Species: Lizards in an Evolutionary Tree

    Film Guide

    The following classroom-ready resources complement The Origin of Species: Lizards in an Evolutionary Tree. Research on the anole lizards is enriching our understanding of evolutionary processes, such as adaptation by natural selection, convergent evolution, and the formation of new species. Also available in Spanish.

  • Film Guides: The Origin of Species: The Beak of the Finch

    Film Guides: The Origin of Species: The Beak of the Finch

    Film Guide

    The following classroom-ready resources complement The Origin of Species: The Beak of the Finch. By following four decades of research on the finches of the Galápagos islands, the film illustrates how geography and ecology can drive the evolution of new species.

  • Sorting Finch Species

    Sorting Finch Species

    Click & Learn

    Finches discriminate between members of their own species and those of a closely related species based on song and appearance.

  • The Origin of Species: Lizards in an Evolutionary Tree

    The Origin of Species: Lizards in an Evolutionary Tree

    Short Film

    (17 min 45 sec) In the Caribbean islands, adaptation to several common habitats has led to a large adaptive radiation with interesting examples of convergent evolution. Also available in Spanish.

  • The Origin of Species: The Beak of the Finch

    The Origin of Species: The Beak of the Finch

    Short Film

    (15 min 54 sec) Four decades of research on finch species that live only on the Galápagos Islands illuminate how species form and multiply. Also available in Spanish.

  • Comparing Human and Chimpanzee Tool Use

    Comparing Human and Chimpanzee Tool Use

    Clip

    (29 sec) Chimpanzees are capable of using rocks as tools to crack nuts for eating. But they don't appear to use sharp-edged tools.

  • Dung Beetles and their Fossilized Evidence

    Dung Beetles and their Fossilized Evidence

    Clip

    (39 sec) Fossilized dung beetle balls are part of a comprehensive fossil collection project to reconstruct the habitat of Ardipithecus ramidus.

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