Hello, this morning I noticed one of my girls not being quite as active as usual, comb slightly down, and tail not as high as usual. She also had this poop hanging from her bottom. More info: She used to be the Head Honcho Hen, but got an infection a couple of months ago which she was on antibiotics for, and has moved down the rung. Still eating ok. Is a vet visit in order or can I treat this at home? I have brought her inside to isolate her from the others. Thanks!