These Dominique Hens are fourteen months old. They obviously are interested in sitting on eggs to hatch. BUT they don;t understand, only one hen is needed per nest. We have patiently waited 22 days and are about to throw out the rotten eggs in upper right box and start all over AGAIN.
The hen is not demonstrative enough to say, “Go Away, I have enough eggs under me, find your own spot to lay an egg.” What do we humans know about making baby chickens? Not much.