Pat B they are volunteer saplings trying to take over our pasture, but are not connected to any cut stump. It is just how these damn things start. I usually brush hog them, but then you may have to repair a flat on a tire with antifreeze in them. That is a terrible job.
Auggie, you are probably right. I don't know how to tell the difference though.
DC, that was the question I didn't ask. I have never straightened them before and didn't know how much work I was getting in to. That is a yardstick. They are a bit thick. I will look for straighter thinner saplings.