We have a flock of about 30 hens and 2 roosters. Through the summer and fall they were giving us about 20 eggs a day. But ever since the "cold snap" we had after Thanksgiving, we are lucky to get 5 eggs total for the entire week. What's going on? These are the hardy black australorps, which the catalogs say will lay in winter. We expected decreased production, surely, but not this! Now I'm having to go back to the store and buy tasteless eggs for my family. They have a red lamp in the coop which gives some heat. Are we doing something wrong? Going from 140 eggs a week to 5 seems really extreme.