I have a hen that has been sitting on eggs for about 3 weeks. I don't know how many eggs or if they or even fertilized. I few weeks ago we noticed her sitting and was very protective. I have tried to get her off the nest, but she pecks with agression. A couple of days ago I noticed that she had kicked out a broken egg. The egg was shell had some wetness and I noticed some little black feathers stuck to the inner parts of the shell. I don't know if something has hatched. She still will not let anyone near her. I don't know if it is time for me to get her off or leave her for a while. I don't know what she is sitting on; rotten eggs, dead chicks that have hatched or even something alive.