While humans have three color cones in the retina sensitive to red, green and blue light, birds have a fourth color cone that can detect ultraviolet light. A research team trained wild hummingbirds to ...
To find food, dazzle mates, escape predators and navigate diverse terrain, birds rely on their excellent color vision. “Humans are color-blind compared to birds and many other animals,” said Mary ...
"Contributions have been based around presentations at the Second European Conference of Avian Colour Vision and Coloration, in Paris"--P. S2. "Supplement to The American naturalist, volume 169, ...
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Birds-of-paradise are sending secret color signals invisible to human eyes, scientists say
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