RE: Help me learn about deer "displacement"
Jeff, displacement has little to do with pressure, and more to do with the deer's natural instincts. They do this to eliminate inbreeding. Once deer reach breeding age (usually between 2.5 and 3.5) the bucks will move out of the range their mothers live in. That's not to say that their new home range will not overlap with that of their mother's. A buck's range is much bigger than a does. Some buck's will disperse many miles and have completely different ranges than where they were born.
As far as the scenario you describe that is more bumping a deer from his range that he is comfortable in. That all depends on the buck. Some bucks will tolerate disturbance and stay put, but become nocturnal. Others will get bumped once and pack up and move to a new area.