Thanks for the insight. My snakes are all on the same rack (2 or 3 to a shelf) but none of them have started breeding yet. I was hoping to start this season but I couldn't get the females up to a good weight before the "winter fast" started. Will the fast likely end naturally for these BPs if I keep offering or will I likely have to separate the males from the females to get them eating again? How far apart do the males need to be from the females before they no longer "sense" each other's presence?