I have taught a junior college course on wildlife management and densities are the hardest topic for many of my students to comprehend. The easiest way of looking at it from a small property scale is to use the model and example that has been used here before. In the example used here, 80 acres (if it were prime) could be "home" to about 4 or 6 deer max, depending on your region. However, a mature doe's home range is 200 ac+, so it would never be permanent. See where I'm coming from? The bigger question, which is brought up by the first two posters, is that to manage for fully mature deer, you need to have excellent working relationships with your neighbors. This is hard on 500 acres, so imagine how hard it must be on a couple of 40s.
Great forum. Great site. I'll be back. Thomas H.