thanks for the link and that was a good example. but i have done research when im out in the woods which is a lot.. i have been in 3 fenced in areas and they look the same in them as they do outside of them. one of my fav hunting areas was cut back in 81 they left all the mast crop trees and from 86 to 2000 it was booming. i would see 50-100 deer a day, and now i might see 1 but most of time its 0.. we do have a ton of squirrel though.. now im not saying we have no deer but there is a big lack of deer. but this area grew and still growing back w/ no problems. now my point is this area was not fenced in... so i wouldnt say its its obvious to say it will only grow back w/ a fence..