I first noticed on my Buff Orpington roo, and I thought that it was from fighting my other Buff Orpington roo, but I notice that 3 of my hens have them too, but the thing is they are different breeds, kept in different coops, and the flock mates looks fine. The hens are- Rhode Island red, Buttercup, Cuckoo Maran. The roo is 2 years old, and the hens are 1 year old. I have gotten some pus out, but the one that wont come out looks different then infection, and very hard. What should I do for them? Thanks for any info!