Comment by lr4444lr

The reasoning ability and executive function of birds, crows in particular, is astonishing. Intelligence (certain kinds, at least) may be just as reliant on brain:body mass ratio as it is on overall brain size and complexity.

https://www.youtube.com/watch?v=AVaITA7eBZE

https://www.youtube.com/watch?v=ZerUbHmuY04