Biology

And a single raven can carry off half a pound (220 grams) of meat. When the birds arrive in the dozens, that can make even a downed bison disappear quickly, Marzluff said. "Ravens get a lot more out of this deal than wolves do," he added... But "never did we anticipate or expect them, I think, to be able to hold in their brains, which aren't much bigger than your thumb, information over thousands of square miles," he said. "We've underestimated them."

Humans think we're the smartest animal when we'd do well to learn from our siblings and cousins.