have to agree that cockatoos are great pets, but you really have to spend a LOT of time with them. if they get bored or stressed they can become noisy, destructive, aggressive and worse feather plucking. I used to have 4 galahs three that could not fly (wild birds with incurable injuries) and a fourth one that we kept her wing clipped. The four of them used to raom around the yard together and our neighbours never realised we even had 1 let alone 4. Some cockatoos like the Umberalla cockatoo (similar to the one in the vid) are renound for the males killing the hens.