All my birds have access to some kind of shelter. The aviary ducks have an outside house and a pop hole into a barn pen. The calls prefer the outside house and the wild ducks prefer the barn pen. Go figure.
My white runners have just been separated for breeding and they have a barn pen with a doggie door that leads out to another large outside pen. I lock them in the barn pen at night because of fox problems. All the geese free range 24/7 and they come in and sleep by the barn door at night. The embdens share the breeding pen with the white runners and they sleep next to my buffs and dewlaps, only on the opposite side of the fence, in the barn. That is pretty cute how they try to stay together even though they are in different pens.
So, long story short - all my birds like the pens and use them nightly.
This is the barn pens with doggie doors leading to an outside pen
This is the outside pen attached to those barn pens above
This is the aviary from the outside
This is the pophole pen that leads into the aviary (where the wild ducks like to sleep)
This is my barn brooder pen
This is the outside pen in the aviary that the calls like to sleep in