Hi we have two laying hens, a wyandotte and a leghorn, and usually they go through our approx. gallon size water container in about 3-4 days. This is their first winter with us and in the last few cold weeks their water consumption has gone way down. Now they're going through the same container in about 10 days. Is this normal? I've tried subbing some moisture in their diet by feeding them yogurt but I'm not sure if that's doing any good. Probably because of this neither one of them has laid an egg in a few weeks, though we do have a heat lamp/light on 24/7 to keep them warm and promote laying. Is there anything we can do about the water or egg laying situation? This is our first winter with chickens so any suggestions would help!