The absence of mechanical sounds opens the opportunity to hear natural sounds. That is one of the beautiful facets of Bartram Forest. If you cannot tell the difference between a bird call and a frog call, it does not matter; just be still and listen.
You walk into the Forest, in minutes you are at a lake. You could sit there for the day and watch the Great blue heron and Belted kingfisher and Red-headed woodpeckers and Eastern kingbirds, etc., and etc. No? Then you could walk the broad trails for miles. This must have been what the environment was like before we "tamed" it with roads, houses, and gardens.