I have a 15 week old hand reared green cheek conure bought him from a pet shop first few days we have had him he has been fine playing with me. He loves it when you tickle his neck and lay him down and tickle his belly Recently he has started biting hard not playing he attacks your hand if you put it near him and chases your hand when you move it away as if he's is attacking you. If anyone has and ideas why he is doing this and how to stop this please help