Ok good to know, that is similar to what I have been doing. Our littles again piled up just outside the cave by 9pm and two were in the cave. I took that as maybe it was too warm inside the cave for everyone? Anyway, I turned the heat down a notch to 2 and put them in the cave at cover of darkness and they stayed. This am they were super active and out and about when I went out to let out the big flock.