My guess is they will eventually figure it out. I put up a two wire electric fence at around the same height trying to protect a Wheat field, didn't slow them down for long.

The lease I have now is old forest, a lot of really old fallen timber, mine sail over those fallen logs like antelope. The one-two year olds are the most agile. The big ones kind of crawl over and have worn saddles into those fallen logs.

Somebody shot a lead Sow and the sounder split up, a bunch of almost one year olds where traveling together. Watched them one night run, pretty much full speed, right through a three wire barbed wire fence. Sounded kind of like a Banjo playing.