Just as Howler said. The only thing I could add would be that it also depends on how high you are or how well you are covered. I have had some tree stands that were in a very inconspicuous place that I could have danced on and never been noticed. I have also had blinds that were flanked by hills, I could hardly move in these blinds.
But for the most part keep your eyes open, because like Howler said ,the further away you notice them the better.

Lifes a garden, dig it.