I keep trying to attach pictures but it won't let me. I can't figure out if my cockatiel is sick. I took her to a vet but they don't really specialize in birds. He said she was sick cause she wasfluffed up but she was also very stressed out at that time. She does fluff quite a bit, she'll fluff when she's preening, when she's sleepy/ sleeping, if I'm not engaging with her, or if she's cold. And it has been cold where we are lately, I've been using a heating lamp but it never seems to get as warm as it be needs to be. I don't know what to think or do, I've had her less than a month.