I have some new neighbors, who got a flock of chickens. There’s 20 or so flock. I have an establish flock which I mostly keep in an enclosed pen. My property has woods that border. We both have green pastures on both sides. I just have more woods and brush. I hadn’t had a problem. But I prefer their flock staying on their side. I had 13 hens and a rooster approaching my blind senior yorkie in my yard. Now my hens grew up with my dog. However I don’t know that flock. What can I do? Should I just fence up the boarder of my property? My flock has never wondered over to the other side. The neighbor I have a feeling knows, but just doesn’t care. I also should feel comfortable free ranging my flock on my grounds and not stressing them.