my bantam started about a week ago stumbling. I removed her from the flock but se ms to be getting worse. She's eating and drinking but can't stand or falls over. Today I found her almost buried under her chips but she was alive. When I picked her up her face is swollen almost bald with yellow like crust. Very lethargic and I noticed one of my geeses a little slower and see she is developing angel wing( notice kids have been feeding wrong bag) Advice please???