My night time goose pen is sort of difficult to section off. Low ceiling and it has to be back and front sectioned, not side by side. Just the way the pen is. I have done it in the past when I had two pairs but the larger gander was a bit of a bully. During the day I am not concerned because they would have plenty of space to get away from each other if a fight did happen. What is the likelihood two Pilgrim ganders would fight if locked in with their girls at night during breeding season? Its just at night I am concerned about. All birds here must be secure here at night because of a large number of predators. (Raccoons, mountain lion, bear, coyotes, owls, and more).