I have a camera and have had similar situations... If the pics are in the dark no need to sit in that particular spot, but try to tell where they are coming from and find a tree closer to the bedding area and hopes that they are getting up durning legal shooting hours... More then likely they are and could be ambushed at a point closer to the bedding area... Be sure not to get to close and push them out of the county... doesn't take much these days...

Good Luck...