How One Naughty Bird Cheats With Fancy Feather Structures

For male tanager birds, carotenoid feather pigments just aren't flashy enough. They have another way to make their colors really pop.

How One Naughty Bird Cheats With Fancy Feather Structures
For male tanager birds, carotenoid feather pigments just aren't flashy enough. They have another way to make their colors really pop.
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