I hunt a piece of ground that is several hundred acres big, but has only a small patch of woods that is maybe 10 acres tops. Over the course of an average summer and fall I get get photos of between 10 and 15 different bucks in this area. I'm sure I don't get pictures of at least 5 more bucks that if nothing else pass through this land during the course of a year. So we're looking at 15-20 bucks in an area with less deer density and from the looks of your photo far less cover. So yeah, I would figure it's entirely possible to have 30 bucks move through that area over the course of a year.