I have a friend that has over 200 chickens, they told me the best way to stop a broody hen is very simple and very quick get the wire bottomed cage but before you put them into it get a container of freezing cold water and before you put her in the cage completely submerge her, absolutely soaking her and then put her in the cage. thats what this guy does and it works for him, he has a business to run though, myself recently with a broody, I just put her in the cage and after 2 days she started eating again properly and she's been ok since but if it hadn't of worked i might have tried the pro's method! anyone else heard of this as a remedy?