Came home today to find one of my males' head totally bald and bleeding. Looks worse than anything I've seen and I don't know if he's going to make it. My daughter thinks she saw brain (egads) but I just couldn't look that closely. We isolated him with a heat lamp and put some Neosporin with pain relief on it but I'm not holding out much hope. They are 7 weeks old; I have them in a cage that is 5 ft long x 2 ft wide by at least 2 ft tall. In that cage there were two males and 3 females. I have to assume it was the other male but I was hoping with that much room they'd be ok. Did I do bad by having too many males to female ratio?