Out of all 5 chickens, one DOES NOT lay in the boxes. Amelia started nesting in our old BBQ smoker, I went to take her out and I found an egg in there! I put her in the boxes several times but she was wanting to get back in the smoker, later on I checked the coop and found a cracked egg on the wooden board that holds the waterer and feeder. She has 4 other chickens to follow as an example. Should I put another decoy egg to help her out?