I've found that if I've spooked some deer..like they've totally busted me by seeing me..they'll run to a near-by woods...and eventually come back within a day. Most times..they're back either in the afternoon if I spooked them in the morning..or the morning if I spooked them at night.

For a deer in my parts to leave and never come back....we must REALLY have to spook him up! Most times..they come right back.