One of the most basic concepts in handling sheep and other livestock is the flight zone. All animals have a flight zone. A flight zone is an animal's personal space. It is where the animal feels comfortable and unthreatened. When a person is outside the animal's flight zone, the animal will turn and face the handler.
It is best to work on the outside of an animal's flight zone. If the flight zone is penetrated too deeply, animal behavior can be unpredictable and dangerous. Sheep are not large, but they are quick on their feet and strong for their size. Pile-ups can result in small enclosures, causing injury to the animals, especially the small or weak ones.
The size of an animal's flight zone varies. It depends how wild or tame the animal is. Sheep that have not had much human contact will have a large flight zone, whereas pet sheep may not have a flight zone. Sheep confined to a small space will have a smaller flight zone than sheep confined to a large area. Frequent, gentle handling tends to diminish the size of the flight zone. At the same time, sheep have excellent memories and can remember rough handling.