Recently one of my barred rock hens went missing. I've noticed some chickens fly over the block wall to neighbor's property and I went up the wall to install another 6 feet tall net on top to keep them in. As I was up the wall I found my missing hen, sitting in a pit shaped structure hatching eggs (neighbor is a business selling landscaping stones and have lots of piles of artificial rocks, some of them been there for years and never got moved and hens found lots of places to hide. I found many stashes of eggs all around their property later). I was very excited because this is what I have been looking forward to. I put a sturdy plywood above her to protect her from sun and the rain. I climb over the wall to check on her every day. Occasionally I see her down with the flock, eating and drinking, or just taking a break. She normally goes back to her duty shortly. It's about time the chicks hatch now. But tonight, as I went to check on her, to my horror, she was not there! Eggs were totally exposed to the coldness of the night! I found one dead chick in a broken shell, full of ants. I thought she must have just abandoned the eggs. I broke one egg just to see the fetal development, and the chick inside was still alive and moving! There were still 5 intact eggs and I quickly put them together, and found the broody hen in the flock, and picked her up and put her back on the eggs. She stayed there. I just hope she'll gave it a last try and save some of the babies.