Blend in with the habitat. Enter quietly, slowly, silently. Stand quietly, no sudden moves or flashes with cameras. Keep your food out of sight. Gorillas use subtle body language to communicate and watch.
Some gorillas move when others approach.
A gorilla perched higher is in a position of dominance. For example, sticks, or leaves. Watch for a variety of eating behavior and nest-building. Sometimes, infrequently, gorillas change families. That happens at the Zoo, too.