Birds and wasps do it. So do octopuses, otters, polar bears and dolphins. A surprising number of animals use tools, and scientists say there are some widespread misconceptions. Among them: Using tools isn't a sign of intelligence, and animals don't need fingers to be crafty with tools.
Melissa Block speaks with Kevin McGowen, ornithologist at the Cornell Lab of Ornithology, about the phenomenon of bird downings. Approximately 1,500 migratory birds died on Monday night after crashing into a Wal-Mart parking lot in Utah.
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