When putting golf balls in nesting boxes, is this just for helping hens figure out where to lay their eggs? My hens are almost 21 weeks, we had 1 small egg on 9-9 at about 10:30 am and then 1 on 9-11 at about 4:30 pm and none since. Its very confusing for me. I have 10 hens and all their combs are a reddish color. Are they all ready? Will the golf balls encourage them to let the eggs fly??