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  • Anna's Hummingbird (leucistic)

    Leucism is an abnormal plumage condition caused by a genetic mutation that prevents melanin from being properly deposited on a bird’s feathers. As a result, the birds do not have the normal, classic plumage colors. Plumage on these birds have several color changes and those mostly to a white color. UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UCSC Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UCSC Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UCSC Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    About one year old here, the Hummingbird has developed a growth on the left side of his beak.

  • Anna's Hummingbird (leucistic)

    The growth prominent here

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    UC Santa Cruz Arboretum

  • Anna's Hummingbird (leucistic)

    A earlier, clean beak. UCSC Arboretum