There's not much, the rooster will alert to predators, sometimes, and by protecting the flock he often loses his life. Squables happen in rooster flocks or non rooster flocks.Is there benefit in having a rooster for protection? Keeping hen fighting down? I really don't know except what I have read and that's not much.
Most chickens lay tan-brown eggs, so you have many options. Why brown specifically?Which is best for laying brown eggs or would you recommend different breeds of hens? We are just looking to have eggs and no breeding right now. I have looked into Marans and Rhode Island Reds.