[SavvyMoon]

Originally Posted by SavvyMoon

Rose-

Could be too that there's too many other birds in the bird room and he's feeling a little threatened, or overstimulated. (I don't know how many other birds you have...) But I'm only basing that assumption on the fact that he readily quiets down when under the cover for the night.
Maybe he feels less threatened or intruded upon when away from the other birds (in the living room).

OK, I saw your signature and see that you only have 2 other birds; and they are cockatiels. :)

Well could it be he's mimicing the chattering and noises of the cockatiels just to get attention? Or... maybe he doesn't like them?
My quaker came from a home where her owner was breeding tiels, and she was the only Quaker.
She came to me when she was 9.5 months old, but she was a 'tiel in so many ways; from her whistles and songs to her chattering and squeeking.
But my bird's transition was from a crazy tiel invironment to a fairly quiet and calm household where she was the only bird for a while.
Your bird might be going through the opposite and is just trying to adjust to having two other (fairly) noisy room mates.....
So it still might be better if he was moved back to the living room and see how that works out for you all.

Savvy*