The difference between still hunting and stalking is that when stalking, you follow signs leading to a particular type of game or group of animals, or close the distance to game already spotted.
You may follow tracks on trails or a morning “dew” trail through leaves and brush. Or you may follow sounds or scents of animals, such as elk, sheep, or feral swine. Or you may simply need to sneak closer to an animal for a better shot.
Stalking requires total focus because you must remember to keep downwind, stay quiet, stay alert, and remain patient.
When turkey hunting, the sound you hear may be another hunter "calling." For safety, you should not stalk turkeys.