I went out to the coop this morning to find my hens with a torn up partially developed chick! The chick was not developed enough to hatch yet, but they had it! Our coop doesn't have many hiding spots and is relatively a simple design, so how did this happen? I have not seen any hen except 1 (who I'm keeping a close eye on and this was certainly not her egg; she only went broody a week ago and this egg was around 15 days) sit on any eggs anywhere. The broody hen I currently have sat on eggs for a week abandoned them, so I collected those eggs and threw them away. Our chickens are in a large enclosed coop that, like I said, does not have many hiding spots.
