I have a Sussex, EE, Sicilian Buttercup, Wyandotte, and Welsummer. They range from 23-25 weeks old. I am free feeding them layer crumble with food grade diatomaceous earth mixed in and in a separate feeder some oyster shells for calcium. I feed them scratch and fruits or veggies a few times a week. They also free range and eat grass/other plant matter two days a week. I'd heard its usually around 20 weeks, so I'm just wondering what age they should start laying, given that its winter. I live in California so the coldest it gets is maybe 40 degrees F, and its closer to 60 most of the time during the day. Is it more the lower amount of daylight and shorter days or the cold temperature of winter that affects their laying? Do these factors also delay their laying age? I know Sussex are from England and should lay right through the winter, so I'm wondering if there's something I'm doing wrong that could affect their laying.