We have 1 Rooster and 3 Hens. We have had them about 3 weeks now. At night after they settle in their coop two of the hens sleep off to one side while one hen gets in the corner but the rooster settles down on top of her head and front half of her body. Is this normal? There are roost in the coop for them to settle on but they seem to prefer the floor which has about 2 inches of pine shavings. Thanks.