my hen has been sitting on 23 eggs for awhile. i don't know exactly when she started sitting on the eggs so i am expecting them to hatch any day. yesterday i moved her to her own house so she can have privacy. today i saw an egg shell open with nothing in it....but there is no sign of a chic??? could the chic be back under her? did she eat it? the inside of the shell is clean, no signs of egg yolk or anything. i didn't move the shell because it is right next to her and i am trying to not disrupt her. i am not sure what happened to it? this is my first time having chic's. we unexpectedly got a rooster in a batch's of chics from the feed store.