Since I have only 1 caique, I am the one that has to play with him, and he is very demanding of my time. And he likes to play ROUGH! I wouldn't trust him to play with another type of bird that isn't up to that level of ferocity... the other bird would get hurt! He loves to cuddle, but when he's had enough of that, he grabs my hand with his beak and flips. I'm supposed to wrestle with him, and roll him around on his back. Sometimes, he forgets that my fingers are too tender, and we're still working on learning how hard is ok to nip or grab. He also loves to perch on one hand and flip into the other. Sometimes I have to just put him on his gym with the toys, because I can't keep up!