My flock's egg production has declined dramatically in the last two weeks. They've gone from 9-12 eggs a day to 7-9. Everyone appears healthy and there have been no changes to their environment or food. I'm guessing (actually my DW suggested) that the declining day length is the culprit. If this is true, based on my flock composition could anyone speculate on how low the winter production will go? They will be a year old on the 27th of this month. Also, just today I've noticed a bunch of barred rock or dominique feathers in the run, does this mean that it is too late to head off the process with some artificial lighting?