Looks like an interesting case developing in Montana.
and
http://www.emwh.org/issues/public%20trust/mt%20pt%20threats/wilks%20fence%20durfee%20hills.htm
Nothing but harassment 🙁
It appears that the rancher built a fence that is better than the legal minimum and is getting grief because he did a good job.
There are fence laws that define what a legal fence is, they mean that you need to at least build your fence to that minimum standard, there is no problem exceeding it. I don't recall seeing a pitiful 3 wire fence that accomplished anything. And usually fences out here are placed along property lines unless they need to be put on ridges and such to avoid being destroyed by snow or the topo is too steep and rugged to hold a fence.
And is the ranch is vested, good luck with that...........
I have to wonder if the blm or fs leased this ground for cattle grazing. In the west there is open range, which means you have to fence blm, fs lease holders cattle off your property. I just hope the fences are on the property line. The blm will do a good Cadastral Survey. Don't do anything until the Cadastral Survey in made an Official Federal Survey, signed by the the Chief Cadastral Surveyor and has been printed in the Federal Register. My 2 cents worth
I doubt these are all boundary fences, often they are just pasture fences and since the ranch probably leases or is vested in the BLM land there is no problem with the fence.