I have heard Oaktree depletion is a major concern for falling deer numbers. I live in Thousand Oaks Ca. There is actually a rare hybrid agrifolia-lobata in Hummingbird Ranch park in nearby Simi Valley. Firewood poaching is also a major threat and Ventura recently had a case of a landowner illegally felling nearly 200 trees. My most memorable experience was camping under a huge white oak within earshot of the freeway. I had 38 quail surround me, a band of deer graze, 2 bobcats, a weasel, 3 redtails, uncounted scrubjays,woodpeckers, 2 great horned owls, a king snake, skunks and possums all visit in 24 hours of still watching.