Hey everyone I have a almost 1 year old pekin duck that’s with 6 chickens I recently noticed a sore on top of her wing and missing feathers and inflammation in her back by her tail I brought her and kept her inside for a week she seemed to be getting better but now since I put her back in the coop she’s gotten worse this is what’s going on I’ve attached pics I’d appreciate any help or advise unfortunately I don’t have the funds for a vet visit at the moment thank you