Hey guys! I have 9 chickens, we will be getting 5 more this spring. We have a lot of hawks and bald eagles around here, plus the occasional golden eagle. I would like to put in some plants that would protect them from aerial predators. The only good one I found so far was Firethorn. We live in hardiness zone 8. Do you have any good recommendations? Spines and thorns are nice to have.