I don't have chickens now but am planning a flock for Spring 2012. I'll only have a dozen or so and would like 4 or 5 breeds. I understand to keep peace I should have only one rooster. I'd like to hatch eggs occasionally but want to keep my breeds pure. Are there groups in my area (North Central Iowa) that loan/rent roosters and with the issues with disease, I wonder about the wisdom of bringing a strange rooster on my property. I would isolate the hen and rooster. Your input is appreciated as I am very new to this. Thank you.