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Why birds survived and dinosaurs went extinct after an asteroid hit earth (2020)
Paleontologists think that beaks may have given birds an advantage over other creatures
Then the intensity of the heat pulse gave way to a prolonged impact winter, the sky blotted out by soot and ash as temperatures fell. “Older hypotheses focused on the idea of weight reduction for flight,” says University of Texas at Austin paleontologist Grace Musser, but the discovery that some toothed birds were strong fliers has led researchers back to the drawing board. Through evolutionary shrinking, birds wound up with larger brains compared to their body size, setting the stage for avian intelligence beyond what the non-avian dinosaurs could have evolved.
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