Today I noticed one of my 12 week old ISA brown pullets has a sore on her head. She is otherwise acting normal. I have 13 chickens total- 2 EEs (one young layer and one older pullet who should be laying any day now), 3 Beidelfelders and 6 ISA browns all about 11-12 weeks old, and 2 Speckled Sussex about 8 1/2 weeks old). They are all together in a large open air coop and get about 30-60 minutes of free range time every day while I do my chicken chores. None of the other birds have any sores and all appear to be acting normally. The sore resembles photos I've seen of bumblefoot, so I'm thinking maybe some injury that got infected? I put Neosporin on it but wasn't sure what else was safe to do.