National Geographic estimates there are between 50 billion and 430 billion birds populating the planet, outnumbering humans by up to approximately 50 times. Spread across 9,700 species, according to ...
PetMojo on MSN
Why aren’t mammals more colorful?
Birds flash iridescent feathers, reptiles show off electric patterns, and fish glow with colors that seem unreal, but most mammals stick to browns, blacks, and grays. Aside from a few exceptions like ...
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