I have 22 Barred Plymouth Rocks. During the summer I was getting atleast 18 eggs per day. Now I'm only getting 8 or 9 per day. The coldest its gotten so far was 27 degrees 2 night in a row. But warmed back up in the 40s. I was wondering if Barred Rock slack of in the winter more then other breeds? That and is there anything I can do? I have tried feeding them crack corn but doesnt seem to be helping much. My dad has 33 red sex links and he still gets 24 to 26 eggs per day. Any answers would be great,,,thanks.