So I've got one flock of 10 chickens (9 hens + 1 roo) that are about 1 1/2 years old. They free range on our 2 acres and so far no problems. (We did lose a few to hawks and/or raccoons, but that's when they were much younger and still penned in the electro-net fence. Since being fully free-range we've had no losses.) Now I have a new mixed flock of 16 chickens and 6 guineas. They are almost 9 weeks old and currently have daytime access to an electro-net pen, uncovered on top. So far we've caught a few chickens out of the fence (when a small portion of the pen had only poultry net, not attached to the ground - I think they crawled under), but the guineas have all stayed in. But they can certainly fly high enough to easily clear the fence - just haven't figured it out or wanted to. They all roost together at night and mostly I think they don't realize yet there are two different species in the flock. So, they'll be turning 5 months in early January, so I imagine the chickens might start laying a little earlier than the guineas, but probably not much. I'm a little worried the chickens won't figure out the nest boxes if they see the guineas laying on the ground. Plus, I'd really like to let them out into the rest of the yard, or at least a larger pen including the garden, by early spring so the guineas can start eating bugs in the garden, and the chickens tilling it for me before planting time. But I'm worried they'll start trying to roost in the trees. Am I just being paranoid? Any comments? Thanks!