this is a question in regards to my 3 white leghorn roosters. I have 2 large white leghorns, and one smaller. I have noticed since winter has set in, that just the edges of my roosters combs and sometimes their waddles have begun to turn black around the just the tips, and then they bleed. their combs do not always bleed when they are black. usually right after the black has gone away. before winter set in, I covered the exposed vents by tacking up some boards and old burlap feed bags. I figured this would help keep out the snow, keep in the heat, and still allow ventilation. I have 2 white light heat lamps hanging in there, I have been insulating the dirt floor with a mix of straw and pine shavings. the only behavior changes I have noticed lately, is that they are really picking on the hens lately, my poor ladies are running and hiding whenever they see one of the boys coming round. so I was wondering, is it because the 2 biggest males are challanging each other? or because the ladies are trying to defend themselves? or is it kinda like frost bite? is there anything i can do to help discourage it? is there anything I need to look out for? should I worry about this? sorry, I know I have a lot of questions, this is just the first time I have ever dealt with this. I will try and take a picture of it, and then figure out how to post it. thank you advance.