I found her laying on her side with her leg up in the air while she slept, which is NOT normal avian behavior. Her Avian vet does know, and she insisted that I keep giving her the antibiotics (that obviously made her even sicker), and she said that antibiotics always make an animal unwell, but that they get over it.
She did not inform me that I should start her on Probiotics.
I read up on it and saw that antibiotics make the person/animal lower their immune system and as a result makes them more susceptible to bacterias/viruses/diseases, and that it is recommended to start them on Probiotics to help them.
Now the vet is worried that my Mango might have Avian Gastric Yeast or Avian Bornavirus, and she sent out tests, and I won't get results until Tuesday.
I have no idea where she could've gotten that even if her immune system was bad... Her cage is always with a new liner, and the food/water bowls are washed thoroughly daily before putting food in. Her pellets are air sealed, and her veggies were washed, cut, and stored in the freezer, so there is no way she got bacteria from anything. She spends time outside in a travel cage under my supervision during the warmer days, and I also have her cage power-washed 3 times a year to remove the stuff I couldn't clean or reach on a regular cleaning day. Also, I have an expensive Hepa air filter in the room to keep the atmosphere clean for both her and myself.
She's definitely not doing well, and yes, she has her own parrot heater that she leans all her body against, and I've been keeping her room warm these days for her.
I'm taking her to an Avian Specialist (the only avian specialist in my state) because I feel as if her avian vet isn't as updated with information on parrots as this Doctor is.