Biology
Comparative Cognitive Abilities in Corvid and Parrot Species
Quick fact
Despite having no neocortex, corvids and parrots achieve cognitive feats comparable to great apes, thanks to a high density of neurons in their forebrain's pallium, with some species having more neurons than mammals of similar brain size.
Why this is interesting
You've probably seen a crow solve a puzzle or a parrot talk, but did you know these birds can outperform many mammals in cognitive tests? Their intelligence rivals that of great apes, yet their brains are built completely differently.