I had a very good hen that hatched 7 eggs 4 days ago. When we woke up this morning she was gone but all the chicks were there. I don't have any idea what could have got her. Her nest was on the front porch. There were no feathers or signs of a struggle, no paw prints left. I've looked over the entire yard...and nothing. We live in the woods but what would come up on our porch and leave no sign? Please, any suggestions I would appreciate.