Outdoor Cameras Australia sell a special kind of security camera. They do not need power connected to them as they run on just AA batteries, so there is no wiring. They are only activated to take photos or video when there is movement. They record onto an sd card in the camera and they can be placed outdoors hidden on trees or in logs. Rain and sun does not worry them.
Because there is no wiring they are easy to set up yourself. People are often amazed that they produce such clear images day and night (even in the pitch black).