Chicken operated pop-hole door

Ha ha great idea get them to put themselves to bed. My friend has a pigeon loft and he's has a contraption so that the birds can get in but not out he let's them out in the morning and They do their thing but if they go back into the coop it's tuff luck they stay in till the morning Maybe this kind of idea could work. Or put it in reverse for mornings. Only problem is if you had the best boxes in the coop they would not be able to get back in to lay
 Good luck