typhlonectes: The visual spectrum of birds includes UV “It is now known that many birds, proba
typhlonectes: The visual spectrum of birds includes UV “It is now known that many birds, probably most, have some degree of UV vision, which they use to find both food and partners. The berries that some feed on have a UV bloom, and European kestrels can track their vole prey from the UV reflecting off the voles’ urine trails. The plumage (or parts of it) in hummingbirds, European starlings, American goldfinches, and blue grosbeaks reflects UV light, often more markedly in males than females. In certain species, like the blue grosbeak, the degree of UV reflectance may also reflect male quality, though females don’t currently use this aspect of plumage to discriminate between potential partners…” via: Audubon.org -- source link
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