New Caledonian crows can use tools like sticks and stones, in a pre-planned fashion, to accomplish a goal. Planning ahead is actually more difficult than it seems. To do so, you have to fix in your mind
Their brains may be tiny, but birds have been known to outsmart children and apes. Until the 21st century, birds were largely dismissed as simpletons. How smart can you be with a brain the size of a nut?
Instead of branching into new species, raven groups experienced something called "speciation reversal." A new study shows that the common raven is anything but commonplace in its evolution. Using DNA taken