http://www.npr.org/templates/story/story.php?storyId=14962813

A few years ago, scientists were astonished when they saw a crow named Betty invent a new tool. She took a straight piece of wire, bent it into a hook, and used the hook to get food out of a tube.

But this was a captive crow that lived in a lab. What researchers really want to know is how wild crows make and use tools. So, to find out, they trapped wild birds on a tropical island and attached video cameras to them.

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