PLUMAGE PHENOTYPES

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Dec 29 2025SCIENCE

Sunlight's Surprising Effect on Eagle Feathers

Spanish imperial eagles start life with bright orange feathers. But over time, these feathers change color. This is not because they grow new feathers. It is because of sunlight. Scientists studied this effect. They took feathers from young eagles. Then, they put these feathers in the sun for 15 we

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