I have 15 hens just over a year old and I've gotten zero eggs in the last 13 days.They are in a coop with a covered run. It's not entirely due to molting. some are currently molting but some had molted and started laying again. It's not due to day light. I have had lights coming on at 5am since Sept 12th. I switched from pellets to crumbles sometime during the first 2 weeks of october and they are clearly not eating as much. from that time till now 15 hens are still working on the remains of a 50lb bag. (no treats or free ranging since Oct 16th) I introduced some 4-6 week old chicks the week of Oct 9th that I had gotten at a TSC swap. Everyone looked and acted fine and to this day the chicks still look fine and are not sick. 1 of my chickens is sick but I'm not sure if they passed on something to some of the flock or not. Egg production was 6.7/day before I indroduced them. Avg. 6.7 eggs/day from oct 1-9 Avg. 5.6 eggs/day from oct 10-17 Avg. 2 eggs/day from oct 18-21 zero eggs/day from oct 22 to now 1 of the hens looks sick (fluffy and lathargic) but the rest look good for the most part. slower due to cold weather and the ones that are molting are growing feathers. Any Ideas why I am getting zero eggs? I have at least 1 sick hen. what do you think she has and how do I treat it? do you think I should treat the whole flock for anything? Please help Thanks.