1173 - I Know Dino Crossover
Sleep With Me
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The Evolution of the Flying Bird
To fly for our average 80 kg purse we'd have to metabolize five thousand calories an hour which humans can't do swimming the butterfly or sprinting are two of the most calorie intensive things humans do. Flight has even evolved three times in vertebrates to pterosaurus pterosaurus birds and bats sorry for anybody like no set of pronounced dinosaur names there is a human sized bird from the paleontological or paleontological paleontological record that shows what a human-sized bird might look like.
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