Hi Vik, if that is your property, you might like to store images of the left face and right face of the Rosenberg's Goannas (aka Heath Monitors) that you see over the years. They can be identified by their faces and can live for decades. So eventually you find out which ones are regulars (possibly living there) and which are passing through. But you need to get close or use a small tele lens to get images that are sharp and detailed enough.