There’s a Reason These Amazonian Parrots Are Eating Dirt

The next time you're at the table and you reach for the salt shaker, consider this: parrots, some of the most beautiful and intelligent animals on the planet, gather in great numbers every morning to feast on dirt to get the vital nutrient. This video shows how they carefully select special layers of damp clay to access vital salt that's been tucked away for millennia. How do they know to do this?

If you think that's bizarre, wait until you see the crazy dietary source of salt for some species of butterfly!

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