Well, I dont think that it has to do with nice. In a ranch community where the ranchers are neighbors, they would talk it over between them before doing something that is most likely gonna cause trouble. If it was going to certainly cause trouble, then they probably wouldnt do it in the first place, or they would take steps to corral the buffalo so that they didnt get away.
What I was pointing out was, that is the colorado law. Even tho Kansas is a Fence In state, if it is necessary to have to build a NEW FENCE, then both parties have to share the cost. It is just state fence law.
Maybe the key point of this article is that Colorado is considered an OPEN RANGE state. Most of the big outfits dont have fences between them, the cattle roam. Highways are fenced in places, and in other places you cross cattleguards and drive and drive and drive. Livestock has the right of way, and if they choose to lay in the road, then you have to slow or stop and honk or drive around them to get through. It is the local custom and the law of the land there. Because Colorado is an open range state, then that is why it is also a FENCE OUT STATE. The court will tell the dude he didnt do his research before he moved there. If you dont like buffalo in your yard, then dont go build a house in a buffalo ranch.