Welcome to BYC, Orloff 2 3!
It would be best to pose your question in the "Raising Chicks" forum. But I would use some grass with roots and dirt attached, not coop poop.
I have a memory of visiting someone who kept chickens when I was a child. I was fascinated by the chicks. The lady chose a chicken for dinner and whacked its head off with a hatchet. She had asked my parents if I should go inside when she did this, but my father said, "No, let her see what...