We have 4 pullets that are 34 weeks old now. They haven't started to lay yet. I know this is discussed at length on here but I thought by this age they would have started. They are happy healthy and spoiled. They free range my yard and I don't think they are laying in the yard. We kept them locked up for a few days and nothing. They eat layer food and don't get many treats. They all have bright red combs and wattles and look ready. Could it just be the shorter days keeping them from laying? Other than adding light are there any other suggestions? Thanks