I have 2 RIR who have been laying since October. Every SINGLE day!! I'm so happy with them but we had quite a surprise and I wondered if it was just a fluke or if this happens sometimes.... Gathered 2 eggs at about 9am. Heard LOTS of sqwaking around 10pm so hubby went out to check. TWO more eggs. I thought for sure the next morning we'd have none. More loud and proud sqwaking and TWO more eggs around 7am. Now we're back on just a regular 2 eggs a day schedule. I thought they'd need a break after that! I have been keeping a 25watt bulb on in their coop constantly so is that the reason?? Thoughts? Edited to say that all the eggs have been a very normal size and shape. No double yolkers or huge eggs.