Bird Flight Is Easy to Lose But Hard to Gain
October 25, 2022
Is it easier for a plane to lose its wings and roll on its wheels like a car, or for a car to sprout wings and fly like an airplane?
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Bird Non-Evolution from Dinosaurs
December 29, 2016
Losing traits won't make a dinosaur fly, and other conundrums in the presumed dinosaur-to-bird evolutionary story.