MYTH: Ostriches bury their heads in the sand when they're scared or threatened.
HOW IT STARTED: It's an optical illusion! Ostriches are the largest living birds, but their heads are pretty small. "If you see them picking at the ground from a distance, it may look like their heads are buried in the ground," says Glinda Cunningham of the American Ostrich Association.
WHY IT'S NOT TRUE: Ostriches don't bury their heads in the sand—they wouldn't be able to breathe! But they do dig holes in the dirt to use as nests for their eggs. Several times a day, a bird puts her head in the hole and turns the eggs. So it really does look like the birds are burying their heads in the sand!
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