I have 9 hens that are a year and a half old. 4 are Buff Orpingtons and 5 are Austrlorps. Last summer and fall (once they started laying) i had awesome egg laying - about 7 or 8 average per day. This summer it seemed to be more like 3-4 average. In the past month i noticed a lot of black feathers laying around the yard and it dawned on me that none of them had molted yet (or so i assumed). I only notice the Buff's in the nesting boxes right now so i'm assuming they are the only girls supplying me with my 4 eggs per day. Only one of the 5 Australorps has had noticeable feather loss. Is it possible that you wouldn't notice a hen molting? I'm wondering if the Buff's molted over the summer and that's why the slack in egg production started this past spring. Then when they picked up the Australorp's started molting? I'm just confused because i have only noticed this one hen with considerable feather loss. The others look normal - just not laying eggs. And the one with feather loss is growing in fine now so i'm sure it's not mites or anything else. I am supplementing with some artificial light and they get to free range about half the week (although they are in a tractor that gets moved regularly). Any advice?