These are a couple of the worst trees that the rabbits ate, before I started to hunt them. The first tree has never recovered (I have it fenced) and it's been two years. The second tries to recover, but it's still getting eaten. I would put fencing around it but it's a hawk hiding spot for the chickens. Jackrabbits are the worst offenders, some are really huge, I think they are called Antelope Jackrabbits.
When these trees were being eaten like this I would see 4-5 jackrabbits hanging out in my yard. I lived trapped the cottontails and relocated them. I never could trap a jackrabbit so I would night hunt them.
This winter the rabbits are under control because the predators are back, I saw a coyote in my yard one night. As long as they are night time hunting, I refuse to shoot them, since my crew is locked up at night.
I have neighbors that will kill every snake they see, unless it's a ratter around my house, they are free to roam. They are great rodent control.
My main point to all this is a certain amount of predators is a good thing, they keep nature balanced.