If they are hiding under the nest boxes or staying up on the slats while males remain on the floor area, there will be little mating activity, resulting in poor hatchability.

• 如果母鸡躲在产蛋箱下，或者站到产蛋箱顶上，而公鸡却在地面徘徊，那么配种率就会降低，进而导致孵化率差。