I had read that chickens molt after 1 year + of laying. A poor layer molts after 1 year, a better layer after 14 or more months of laying. I never heard chickens only molt in the fall until coming to BYC, so who knows? These sex links probably have been laying since 20 weeks old & that combined with a change in venue could very well make them molt. If it is rooster damage, usually the feathers are broken off & won't come in again until they molt.