Thank you all for advices. I haven't been here for a while so I've just seen all the answers. Anyway, my litle Pumba started eating carrots, apples and grapes in the meantime. So now I think he is doing just fine. At least I thought so untill few days ago. What happened is that she started loosing feathers. Now, I haven't seen her plocking feathers herself but I have seen them falling off while she's flying around the room. Please tell me that that's normal considering that it's autmn. I'm just very conserned that she's not geting ill somehow, but she looks just fine. She eats normaly, drinks water normaly and yells regulary

(means every day for a few hours, especialy if there is some music on - she likes to sing along with me). But I'm still consirned about her. I've been having her for quite a short time - less than a month but I got really and quickly attached to her.
Thank you all again and I need to ask for help once more. Sorry for huge post and typing mistakes
Best regards