The biggest birds that ever lived were nocturnal, say researchers who rebuilt their brains. Madagascar’s extinct Elephant Birds stood a horrifying 12 feet tall and weighed 1,400 pounds. Scientists thought they were day dwellers like their emu cousins, but found new clues in their olfactory bulbs.

The biggest birds that ever lived were nocturnal, say researchers who rebuilt their brains. Madagascar’s extinct Elephant Birds stood a horrifying 12 feet tall and weighed 1,400 pounds. Scientists thought they were day dwellers like their emu cousins, but found new clues in their olfactory bulbs.
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