I have six chickens I got this spring as chicks. This summer they were on a roll and giving us six eggs a day! About 4 weeks ago we noticed a decrease in production and for the last two weeks we have NO EGGS! What's up? I know the weather and light has changed. I did notice an increase of feathers in the coop, so I thought they might be molting but they are less than a year old. What gives? They seem healthy and happy! Help!