This has been going on for weeks now and we are fed up! Our 3 ducks will not go in the coop at night. They sit together in the middle of the yard and we have to catch them. We only have to catch one and the other will follow into the coop. They share the coop with my 13 chickens. I know the ducks aren't fond of the chickens because I see them chasing the chickens if they get too close. Do they need separate sleeping quarters?