All my chickens free range. I've had my brahmas in their coop, surprisingly referred to as "the brahma coop" for nearly four years now. About a year and a half ago we added a second coop, for a flock of several different breeds, we refer to that coop as "the baby coop". Although the brahmas have investigated the "baby coop" and vice versa, 99% of the time the birds return to their own coops at night to roost.
The brahmas have always used their own coop and their own nesting boxes to lay their eggs. A couple of the younger birds will use the brahma coop to lay their eggs if they get the chance. Birds from either coop will get a drink of water or a bite to eat in either coop. Same exact waterers, same exact feeders, but somehow a treat when it comes in a different location.
Awhile back I switched all the nestboxes in the baby coop out for new ones. The old boxes were covered kitty litter pans, same as what's in the brahma coop. The new nestboxes are round and mounted on the wall of the coop. My younger hens did not like the change at all and would literally "hold it" until I let them out in the morning and then make a mad dash to the brahma coop to use nestboxes that were the same as their old boxes.
Yesterday was kind of interesting. It was very stormy and it got dark alot faster than normal. It caught me by surprise and I was late going out to lock the birds up. Whereas the baby coop is situated to take advantage of any available light, the brahma coop is shut up for the winter so gets darker, faster. Two of my brahmas hens were apparently afraid to enter their coop because of how dark it was.
One brahma, Snowy, hid in some bushes and came running to me the minute I stepped outside. I picked her up and carried her to her coop. Once inside I did a headcount and came up short one brahma, Dink. Searched everywhere for her, checked both coops several times. I finally found her hiding behind a crate in the larger baby coop. Apparently Dink knew enough to seek shelter in a coop, but because the brahmas pretty much keep to themselves she wasn't comfortable with roosting with the younger birds.
As soon as my husband gets home from work today we will be moving the third coop that we purchased over the weekend to the garden where the two other coops are located for a pair of special needs chicks that are currently living in the brooder.
Let the games begin.