I love smart birds.

"Crows, as members of the corvid family, are highly intelligent creatures that make tools, recognize individual humans, and learn from one another. Wild crows are not known to create or display art. But they do occasionally leave behind objects like keys, lost earrings, bones, or rocks, for the people who feed them, a behavior that John Marzluff, conservation ecologist and Swift’s colleague at the University of Washington, calls 'gifting.'"