Scientists have shown that members of an Indonesian parrot species, the Goffin Cockatoo, can solve a complex mechanical five-step problem and so retrieve a nut from a puzzle box.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...