I have a very broody hen for whom I was able to get only 3 hatching egg. 2 of the 3 were broken in the nest along the way.......so there is only 1 hatching egg left now. Day 21 is this friday.....and I'm soooooooo excited! But I'm wonder if there are any issues or problems I should be aware of with having a singleton chick???? Any advice appreciated!!