Well out of 24 eggs we ended up with 2 that hatched. They are my daughters. We gave them to a broody hen who is a great mama. At 2 today I went out to check again for eggs and mama and babies were fine. They are in a separate part of the coop from the rest of the flock. Went out at 5 to lock everyone up and a baby was gone. I looked everywhere, ripped nest boxes apart looking....looked everywhere inside the main coop, and all around outside, the rest of the flock/ducks free range. No sign of a baby chick at all anywhere. I am so baffled and upset.....The brooder pen has needed to be redone because if the chicks really get brave there is a small section of chicken wire that if they get up high enough they can get out, but I never have had any issues. I put mama and the remaining baby in the medium rabbit cage for the night so there won't be any more escapes. I know these things can happen but I am still devastated! Its extremely cold here at night so even if it was outside somewhere I don't hold out hope for finding it alive.