One of the biologists I think he was (not sure on the name) said we can't stockpile the deer. If we have too many deer and a bad winter and halfway through all the deer eat almost all the food more than likely all those deer will die. We need a stable population so that when we have a bad winter there will be enough food for all those deer to survive and not have all of them die off. That same rule goes to all the game animals. We just can't stockpile any animal because one winter you can loose them all or a whole bunch.