I have three chicks that are six months old. We've seen two mounted, and we have two baby eggs. We haven't caught any of the chicks in the act of laying in the nest box, though all of them have been seen checking out the boxes, and leaving.
Our frizzle has not been seen being mounted, and I'm wondering if it's a male or female. It's possible (and probable) that the two chicks that were mounted are the ones laying eggs, but it's equally likely that the frizzle laid one and we just haven't caught it being mounted.
It's a passive bird, ugly, but non aggressive. No crowing.