Some backround. I have 2 EE roosters the same age: Billy- all white and very large since a chick , much bigger than the other,crowed at 8 weeks, very good with the girls and not aggressive, was very relaxed about the other rooster and they got on well until 2 days ago. Pal- small very nicely colored,late bloomer, kind of rough with the girls, not people aggressive. My problem Billy had been the clearly dominant roo for 10 months. Two days ago They are fighting like crazy and obviously Pal won the battle he chases Billy from the hens and from the food and water. I was hoping to breed chicks from both of them this spring as I have 2 broodies I would like to test and obviously fertile eggs. We just had to quit free ranging due to a huge increase in roaming dogs. Could that have made this change occur? I don't have a seperate bachelor pad and our winters can get nasty. Will I have to cull one? If so which would you choose???