I just have to tell them, "Little Pig, go home!" and they will run back to their pen.
They get over that real soon. The first time I raised a couple of "wieners" I used sheep fencing for their pen. It worked great until they hit the 250 pound mark. Then my pigs being, well, pigs, started to stick their snouts through the wire to root around the outside perimeter of the pen. I see that you have a pen made of welded wire. That's the only way to go. Sheep fencing is twisted together to form 6x6 inch squares. After awhile the pigs found out that if they pushed hard enough the wires would slide apart. Not long after that, I found them in my garden rooting out my carrots. I was furious (I was a much angrier and younger man back then). I ran up and kicked one in the side as hard as I could, spraining my ankle in the process, but the pig just gave out a grunt and kept rooting. I then got a big stick and started whipping them. They finally relented and ran back to their pen, picking a spot in the fence and then pushing their way through. Finished on carrots, needless to say by the next afternoon they were in the freezer.
Soon, they won't be able to fit through the holes anymore, but larger pigs can present larger problems. Thanks for the info and story!
btw, have you ever seen pigs free range using an electric fence ? the perimeter of say an acre or 5 or w/e has a single "hot" fence as the perimeter, but the "trick" is that the outside of the fence is tractor tilled once a wk or so depending on the weather. Even full grown hogs won't cross over to the tilled areas as they receive a shock if they try. I have seen this many times, it really does work. Be a little tuff for you however, seeing how your in the woods and not out on a flat farm ... My point actually was that piglets learn from mom n dad not to go into the 'tilled' areas. pigs are smarter than people want to believe !!!!
"Bam, bam, bam bam, One side Bacon, one side Ham" lol
"Thems not pets, son, thems food" lol
I use concrete on my farm.