I have 13 hens with 1 rooster. They are between 26-31 weeks old. Based on the average laying capacity from each breed I calculated just under 65 eggs a week. The last couple of weeks it’s been closer to 80 eggs a week. We are also averaging about 4-5 “twin eggs” as my granddaughter says (dual yoke) each week. What factors would lead to this greater than expected production? Words of wisdom? Cautions?