I have a big barn and 17 chickens. Next year I want to adopt 2-3 cats from the local shelter(as they have about 30 there right now, and are a no-kill shelter) as barn cats for my barn. My chickens are 9 weeks old right now but by next year they should be pretty big. We have a lot of mice in are barn so thats why I want them......plus we might get a couple horses next year(and what's a horse barn without barn cats????? riggghhhttt ). Would my chickens be old enough/big enough that the cats wouldn't bother them? My chickens have a section in the barn as there coop(so they don't just run around the barn).