Hi jackhammar. Although the wall looks great .. I also feel its a little out of place. The capping definately. Ive seen many dry stone walls and have never seen capping ... usually only when the wall is built around a dwelling more than a barn ... but whos to say theres not a dwelling on this site also?? The stone used to build these walls is found nearby or at at least locally. The wall in your reference picture is cut stone.
Around most farms and animal enclosures here in sweden they use a simple fence nade from branches. 2 uprights every few feet and straight branches layed diagonally between them. I could believe this would be common in russia as well!
This is the only picture I could find ... there is a small fence in front of the barns. If it is not clear enough, i can make a simple drawing.