I had ordered a dozen Buff Orpington eggs and put them under my hen when she went broody. I have had them in the incubator inside until she went broody. I had no other eggs to give her so on day 8, I moved them outside with her. I noticed that she was OFF the nest on Sunday. The eggs were cool to the touch. I checked on her late Sunday night and before I left for work on Monday morning, she went back to setting on them, or so I thought! When I got home from work, I checked on her and she is not the same hen. She is a new hen that, I guess found the eggs and took them for her own! I know it's not the same one because she is missing a few back feathers from the rooster, doing his thing. Also, she is MEAN!!!!! She didn't peck at me, she grabed the littlest bit of skin on my hand and clamped down, hard! It hurt! She is going to be a good mother, I think. Do you think that the chicks could have died in the time it took the other one to get on the nest?