Oh, and I should add, that at night, I close off the small chicken door so the girls are safe inside, and I close up the bunny in his hutch, so they don't sleep together at all.
I have 10 chickens (5 full size and 5 bantams) and a rabbit who share an outdoor fully enclosed run. The chickens can go up a ramp to their indoor area, and I have a two-story rabbit hutch where the bunny can retreat if he chooses.
They all spend most of their time together and no one bothers...