Is she laying? I ask because I had a Marans hen that crowed. We found out that she had a tumor that was creating a chemical imbalance. We thought we might have a cockerel with henny feathering but when we culled her at 15 months we checked inside and she was definately a hen, but also had zero signed of any egg development. We learned that some of the hens will lay a few eggs but they don't earn their keep.Oh my, I have a crowing cream legbar hen lol. She recently started after I rehomed the cock from their pen.