Mark Sturtevant wrote:
The eggs are galls, which are tumorous growths on plants. Galls can be caused by an insect living inside them, or by fungi or viruses. They are pretty weird. You can crack one open to see what is inside, if anything. If I can get an ID on the plant, then that should lead us to the culprit.
I will see what I can do when I get back to that area. Thanks for your comments.