Yes, they work well, had to add two more, the girls have slowed down since the cold moved in but we have gotten two dozen eggs from them the last couple days . I have six boxes for 14 hens.
Sam got frost bite.. Coop is dry, even put in a heat lamp, no drafts. Do you think he will okay for the fair in July , he's inside now ( I'm sur feathers will fly when my husband gets home and there are chickens in the bathroom) especially one that chatters and crows like he does.