We are planning to let our little band of chickens free range during the day. However, we live in an area that is very open, no fences, and there are many mini flocks- usually a roo and pair of hens- that run wild up and down the street. One strange flock roosts in our trees at night and will sometimes hang out and run around our yard. (We live on a grain drying and storage facility so there is quite a bit of rice and corn piled on the ground to entice them.) My question is: Will they try to join my flock, attack my flock, anything? Mainly I'm concerned with the strange roosters, will they try to mate with my girls? It's a newbie concern, but indulge me.