parrots - Compared to any of the larger parrots a pionus will always rate as quiet. Pionus also tend to be much quieter than most conures. However, even though pionus are rated as quiet birds, they can learn to screech, and can be louder than some cockatiels. Most pionus screaming is because of their environment and the way they are raised. A happy pionus does not have to be a screaming pionus. Then again, a pionus that screams is not necessarily unhappy