I have a male cockatiel which has lost his mate recently. He was in the cage with another 2 birds but I have had to remove one of them as he was constantly picking on her, so he is left with a male in the cage. He is calling out constantly, all day every day. He has toys, he is in the living room so there is always someone around, there are 2 other birds in the house besides him (a mini Macaw and a blue pennant rosella, the male with him and the little female we had to remove, and its getting to the point were its driving me potty. Not only is he shouting but he is setting the rest off as well (the Macaw can get pretty loud) Is there anything I can do to stop this, he wasnt like this before, he either gets covered till he is quiet or ignored at the moment.