Science: Parrots and crows overtook monkeys on neurons

The brain vranovy and parrots is filled with very small neurons which in the sum it appeared even more, than at primacies. About ingenuity of crows and parrots all know: both those, and others are capable to study the human speech and to use instruments of labor (not so long ago ourselves in detail told about mental capacities vranovy and parrots). Zoopsychologists can give the mass of surprising examples...