I have 5 new "game" hens and the "old" flock is 3 Delawares, 4 Bar Rocks and a Bar Rock Rooster. They all free range together and eat scratch I throw out all together and the game hens are going into the open coop and laying eggs in the nest boxes. What would happen if I shut them all up at night together? Right now the new girls are roosting in the trees but I live in the wild woods and am afraid they wont last.