I have Ivomec treated my entire flock. Expanded the chicken shed and no results. None of the 8 new ones (born 4/1) are laying. Buff orps and Barred Rocks I have 18 other hens that are 14 months old and only 5-8 of them are laying. They used to do much better than that. In June I sold 8 hens and a roo. Ever since then, my egg production has dropped to almost laughable proportions. Their feathers do look "dusty" and their combs and legs are pale. Some of their combs no longer stand up straight. They just look tired. So, now I have 26 hens and only get 4-10 eggs every day. What is up with them? Any suggestions? My girls free range on 1/4 acre of pasture, free access to feed and fresh water. They get fresh produce and scratch grains daily. I have a 4' by 6' bank of windows in the chicken house, and I do leave the light on when it is a gloomy day. Maybe they are just so spoiled they won't lay.