Owls generally have a hunting territory away from their daytime roost. All Owls are equipped with special adaptations that make them efficient predators. Keen eyesight allows them locate quarry even on dim nights. Sensitive, directional hearing helps locate concealed prey. Some species can even hunt in complete darkness using sound alone to guide them to a successful kill. An Owl's flight is silenced by special wing feathers, that muffle the sound of the air rushing over the surface of the wing. This allows an Owl to hunt by stealth, taking their victims by surprise. It also allows the Owl to listen for prey movements while still flying. Most species hunt from a perch, such as a low branch, stump or fence post. They will wait for prey to appear, and swoop down with open wings, and their talons stretched forward. Some species will fly or glide a little way from the perch before dropping on the victim. In some cases, the Owl may simply drop on the target, opening their wings at the last moment.