One of my 3 week old chicks went missing a few days ago. So did the entire nest of eggs that my broody was sitting on. Today I found broken eggshells on a shelf outside of the chicken house and eggshells all down a piece of drainpipe that was sitting on the shelf. The eggshells are neatly broken almost in half. There are no signs of digging or ripping the fencing or netting around the chicken house, but there are small openings by the door where the wood is warped.