This type of zombies is a people, that turned while doing some activity, so they can be founded in places like wardrobes, baths, bodybags or in dark backstreets (in last ocassion they should pretend that they are corpses). While not alarmed first time, they are sitting in their cover. They can be alarmed by loud sounds (gunshots, explosions e.t.c) or by interacting with their cover (opening, hitting)
Edit: after being alarmed they aren’t returning in their covers. After that they behave themselves like a regular zombies.