I think it depends A LOT on how 'wild' the place is and how use to people they are. Compare a wilderness area where you would have trouble getting within 100 yards of a deer and the suburban parks where they won't get off the path so you can pass by. Or wild geese that that have look-outs and will spook at a quarter mile vs. those at the local corporate pond that will chase you away. If it is truly wild place that doesn't see many visitors, you're going to need a good blind. - TF