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intelligent

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Clever Birds (Video)

By greenexpander ⋅ December 18, 2007 ⋅ Post a comment

Birds are clever, but not many of us know that. Here’s a quick excerpt from a documentary depicting how birds get around. The brain of a bird weighs about 10 times as much as a brain of a reptile of the same weight, but slightly less than that of a mammal of the same weight. [...]

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