Strange way to recycle golf balls

My new chickens are adjusting to their new home and were hesitant to use the nesting boxes... They were laying their eggs on the floor of the roost just in front of the nesting boxes... So I used a little chicken psychology and put a golf ball in each box. Sure enough this morning there was an egg in each nesting box... I do think I might have one that is eating her eggs which is difficult to stop once they have the habit... I'll to watch closely and see who is doing it... Oh the drama of living on a farm!!!!