I have 2 hens i purchased in aug. i was told they are about 8 months old and at time of purchase they were molting. since i have had them they lost a few more feathers on their tail and they have all come back in. i feed them laying feed. and every few days bread. i have placed a golf ball in laying box so they know where to lay. but they have yet to lay any eggs. anyone have any ideas on what the problem could be? Thanks..