I need help. My barred rock hen has been missing a lot of feathers lately. We weren't sure if it's a molt, or if the other chickens were picking on her (she's at the bottom of the pecking order). Today my mom noticed she was laying kinda weird with her eyes closed. While observing that, she also noticed she was pulling out her own feathers. By the time I got off work, she was up and moving again, but I took her in the house where there is AC, with water and a plate of various foods. She has feathers missing everywhere and has no feathers left on her crop, so it's quite a bulge, but it doesn't feel different from the other chickens crops. Also, what looks like a scab on a naked part on her belly. I took pictures that I'm posting too, but if anybody knows what's wrong, please let me know. (I also added a random picture of her eye, cause it hasn't been right for months, and I figure I might as well post it) also a foot picture because her toes look like they might be swollen? i started her on amoxicillin, in case it's something serious. Could it be mites or lice? I just don't know why she's pulling out her own feathers.