It takes several years for flamingos to develop pinkish feathers.

The pink color of flamingo feathers actually comes from beta-carotene—a red-orange pigment that’s found in algae, brine fly larvae, and brine shrimp that flamingos eat. 

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Gentoo penguins propose to their mates by presenting them with the smoothest pebble they can find—they use it to build their nest together and will mate for life

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Hummingbirds Are The Only Bird Species That Can Fly Backwards

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