I watched a buck from about 600 yards away opening weekend. I was down wind in my blind and he was between me and our cabin.
The buck topped a hill and looked dead at the cabin area for 21 straight minutes without moving (I only noticed the time as I glanced at my watch to take note when they were moving)
He stood there that long just looking at the cabin. I'm sure he was looking for any activity to see if we were hunting that weekend