Hello everyone, my chicken and I are new here. My 15 week old silky (Leah) started furiously grooming her belly and armpits 2 days ago. I picked her up and went right through her feathers and she has no mites. Now she has started running backwards with her head tucked under her and sometimes tumbles right over!I took her back to where I got her yesterday and they gave me some antibiotics, Triple C (Chlortetracycline hydrochloride). She still eats but mostly does head stands. Please help.