One of my chickens that was added to the flock about a month ago has a weird crusty wound on her head that I just noticed today. I don’t know how long it may have been there because she’s normally very skittish and doesn’t let me near her or pick her up. But now she’s squatting so I was able to hold her today and saw the wound. The whole wound is about the size of a quarter and it’s covered in this hard crust, and some of the feathers around it are covered in the crusty scab stuff. I put a wet compress on it for a little bit and put neosporin on it, now she’s in separated from them so they can’t peck her. She was picked on while we were integrating them but her and the other new ones have gotten bigger and don’t seem to be picked on as much. They’ve never been injured before. Not sure if this is from being pecked at or something else. Is there a way I can treat this before having to go to a vet?