I have 10 chickens. 2 Silver Laced Polish - 1 rooster and 1 hen. 1 Ameraucana (Easter egg) 1 Rooster (I'm not sure yet of the breed) 4 Road Island Reds 2 White leghorn They are all about 7 months old and most are laying. I have a couple questions: When would I assume some eggs would be fertile? Do I need to separate, in a smaller area, a rooster and a hen? or will he/they go at it in the coop? Is spring the best time to incubate eggs or can I do it at any time? Are there negative consequences to letting my birds "interbreed"? Not sure if that is the correct term. Thanks for any and all input.