sass

Hi, I'm not a professional breeder and only have four budgies (1 bred at home) with two nestlings born a week ago. After they have left the nest I will be removing the box as I don't have the room in the avairy or the know how to let them continue healthy breeding. Okay, that was backstory. One of my grown budgies who is a female and white with black eyes, undetermined age due to getting her from RSPCA (she was surrendered and had her wings clipped) is not 100 per cent. Two weeks ago I had to remove her from the rest as the shoulder of her right wing turned black under the feathers and was swollen. I took her to the vet and he thought it was a hemmorage from night fright, took her then to an Avian vet who agreed but also was not so sure, gave me calcium supplement, said it would get better. The black is still there and has not changed in appearance, the swelling though has decreased significantly but the wing shakes and just above the cere (that was browny pink last week but is now smooth and cream with one half scabby), the small feathers have come out. Now are these two things linked or are they not? Also if not, is the feather loss and ceres scab, mites/parasites? And is the black under the feathers a hermmorage or cancer/tumor or something to do with blood feathers? The avairy is outside sheltered but ventilated and there is a soft light at night. One vet said put her down, the other, she'll get better..I would like to know if anyone has seen this type of thing before (esp the black) and what can truly be done. Regards Sass.