At the begining of the summer when it started getting hot my egg production dropped way off. I was getting an average of 11-13 eggs a day from my 18 hens, but now I'm getting 2-3 eggs a day. I have 7 N.H. Reds, 4 Amerucanas, and 7 Buff Orphingtons. The reds are 3 years old, everything else is 2 years old. Does anyone have an idea as to how cool it will need to get before regular production picks back up?