I had separated my White Sebastopols from my Grays and Buffs in preparation for the breeding season. Our weather has turned so nasty for so long that I can't maintain the extra pen, and after 3 weeks apart, I put the Whites back in with the group until the weather gets better. I have always had peaceful ganders but when the White boy returned to the flock the Gray/Buff gander started attacking him, the White boy went after him too. Does separating them for breeding ruin their harmonious relationship forever? or is it that my White boy was SO extremely stressed being separate that his stressed energy stimulates the other boy to beat him up? If separating them for the breeding season will ruin their good relationships then I cannot do that.