Early in the fall, egg production went from 18 eggs and started trickling down to 2 eggs a day. Two weeks ago I installed an 8' flouresent strip light in the coop and installed a timer set at 6am-9am and 4:30pm-11pm and last night they were at 7 eggs. Looks like the problem was there is not enough daylight in the winter. Have to make them believe the sun is still out.