My 9 yr old bought some really nice Rose Comb Rhode Island Reds last fall. They were older but they thought maybe 2 years, but not certain. She wanted them as breeding stock as the roo has had his toes froze off. Well, we have not gotten one egg from the hen, not one, since we got her in September. What can I do to stimulate production just so we can get some to put into the incubator? Ideas?