A male Broad-tailed Hummingbird (Selasphorus platycercus) (IMAGE)

Proceedings of the National Academy of Sciences

A male Broad-tailed Hummingbird (Selasphorus platycercus)

Caption

A male Broad-tailed Hummingbird (Selasphorus platycercus) at the Rocky Mountain Biological Laboratory in Gothic, Colorado, where the researchers conducted field experiments on avian color vision.�

Credit

Image credit: Noah Whiteman (University of California, Berkeley, CA).

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