Our pullets are 7 months old now, we see our Buff Orpingtons constantly laying, even on cold days - below 20 F, however we don't see our Silver Laced Wyandottes working as hard as Buffs. Buffs started laying really early and lay large eggs, we had a humongous egg yesterday 2 3.4 long had never seen a double yolker like this one. Our record - 17 eggs a day with 37 pullets, although they are stealing those eggs and we don't know how many they manage to steal - they don't leave much evidence I was reading here and there about our breeds both are very cold hardy, SLW supposedly are better layers than Buffs. Both of them came from Meyer hatchery, at the same time. Couple of weeks ago we lost one of SLW just found her dead, and this is our first loss since we got them, (not counting 3 newly arrived chicks whom we lost in 3 days interval). So the question is - is it a winter causing problems with BLW laying or could be anything else ?