Here's Why The World's Smallest Birds Are As Tough As Diamonds loading...
Here's Why The World's Smallest Birds Are As Tough As Diamonds
Hummingbirds are tough—so tough they've evolved a clever way of coping with the cold.
About Lyrebird

This songbird breaks out the sampler to get a mate. And the superb lyrebird doesn't stop at mimicking other bird species — man-made noises just become part of the remix.

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