I have 5 silkie hens to 1 rooster and I'm only getting an egg a day? All of the hens are over 6 months, their in a chicken coop that has one open wall, a timed UV light that turns on for a couple of hours every morning, a heat lamp at night, and 24/7 water and food that contains 22% protein or what ever it is that helps them lay. What the heck is up with them???