ducks with chickens?

[questions543]

Is it possible to have only one duck mixed in with your chickens if you only have 4 chickens? Or do you need two for them to be happy... can you put the ducks and chickens in the same run/coop?

 

[FireTigeris]

I have ducks and chickens in the same coop, I have more then one duck, the ducks and chickens hang out in different places.

Here are old pictures of my coop.

https://www.backyardchickens.com/gallery/album/view/id/6177963/user_id/44847

I have a kiddy pool for extra water- and extra waterers that ducks cant knock over to get into.