Sorry Nancy, but you sure gave the wrong answer to the problem caused by the oak twig pruner.
"Hello, Without seeing the tree and the branches that fall, I would suspect that this is probably due to squirrels nipping the branch terminals off for use in nesting. They always nip off more branches than they can use this time of year, and actually do not use them if the drop all the way to the ground. This branch clipping loss will not harm the long term health of the tree. My best, Nancy"
Jefferson County Colorado oak