1. This video from the BBC shows a crow solving a problem that requries eight separate steps. Can you figure out the solution before the crow does?
3. Step 1: Collect the stick.
6. Step 4: Figure out that you have to drop the stones down the plastic tube.
7. Step 5 & 6: Collect the third stone, drop it into the plastic tube.
8. Step 7: Pick up the second stone and drop it down the tube to release the longer stick.
Kelly Oakes is science editor for BuzzFeed and is based in London.
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