Crows are among the few animals on Earth that use tools. But they are also among the small number of creatures that use abstract reasoning to figure out how to use new tools. And now scientists have captured a crow on film doing an incredibly complicated tool-use test.


This puzzle involves 8 separate stages, and the crow — nicknamed 007 — aces it. This test, devised by animal behavior researcher Alex Taylor, is an amazing demonstration of how smart crows can be.