Thanks Giffy! I do need to make a ramp into and out of their little water tub. Would wire fencing bent to go into the water and back out work ok? I might have some extra chicken wire or hardware cloth somewhere around here. I have put up pieces of wood siding against the bottom 2' of their pen so nothing can get through the chicken wire walls.
I am estimating the day 28...like you said, it was hard to pinpoint when day 0 was. I knew when there were eggs in the nestbox, but not when she started sitting on them. I started counting days when I noticed her not out with the others anymore, like usual. Nothing happening today that I could see. I just went out with a flashlight to check. The male and female are out, but not the other female.