I was wondering whether anyone could give me any advice about what to do about a sick budgie- I have got two budgies who live outside in an aviary, who have lived outside for around 18 months so are used to the cold etc. (covered with plastic as it's winter) One of my budgies recently seems to have taken a turn for the worse, he's usually really active but now is just sleeping all the time with his head under his wing.Over, the weekend they had been running short on seed, but I fed them grated carrot which they love, and I could tell he had been eating it because he had carrot juice around his beak. On Sunday I filled up the hoppers with seed and they ate a lot of it, but in the evening he went lethargic and is now (monday morning) how I described earlier (sleeping, feathers puffed up -still on the perch though). He's around five years old and I understand that they live shorter lives outside, but I can't think of any reason why he is sick, other than on saturday it was a very windy day, and if he had a low level illness the wind could have exacerbated the problem - although as the aviary is covered in plastic now it's winter very little wind comes in and they are used to adverse weather conditions, as they lived outside last winter where it got below -10 frequently. Apart from taking him to the vets which I will do, what should I do? Should I move him inside where its warm? I don't really want to split him up from his partner as they are very attached and my problem with putting them inside now is that I won't be able to move them back outside until the spring or later as they will presumably be acclimatised to the inside and it would be too cold, and they would have to live in a cage which I'm not keen on. Alternatively, would the stress of moving them around be too much and should I just keep him (and her) in the aviary and monitor him and hope for the best? Additionally, if the worst were to happen what would be the best cause of action for the remaining bird who is around five- if they had been moved inside should I buy a new friend for her and put them back in the aviary when it warms up or if they weren't moved inside if that was the best cause of action (her and the ill one) should I let her live in the aviary by herself until it warms up and I can get her a friend, or move her back inside and get her a new friend straight away?