Roughrider, it sounds like your deer have you figured out. It sounds like they are running late and possibly close to no moon nights. The doe around here are usually in my backfield before sundown except during hunting season (I'm sure because of the hunters around) and select times (ie: coyote moving through area, full moon etc).
Unfortunately the Mennonites try to poach them (3am on a Sat morning a few weeks ago, though they missed). But I can work on my trails through the woods and the Doe will lay perfectly still along one of many fallen trees on the hillside. The only time they spook is if I get too close or spend too much time watching THEM. Of course these Doe know me and I could hit them with a slingshot from the back porch about an hour after dark