The first, of course, is convenience . During the winter and during migration periods, your feeder will need to be refilled frequently. You may be amazed at how popular your feeder will quickly become. You may be tempted to place the feeder in a very awkward location so as to discourage squirrels form raiding it, but the inconvenience to you when it comes to refilling the feeder and the potential to discourage its use by birds, outweighs the benefits of this approach to controlling squirrels. There are other more practical ways to control pesky squirrels such as the use of hot chili pepper.
Weather is another important factor.
Try to place your feeder where it's sheltered from the prevailing wind. Birds get chilly too and they won't stay long if it means shivering in an icy winter wind. The next factor is pleasure . You will soon discover that watching the comings and goings of different birds at your feeder becomes one of your great daily joys. Place your feeder where you can see it from your kitchen table as you enjoy your morning coffee or within easy viewing distance of your favourite living room chair.