How old and what breeds? That has a lot to do with it. It's essential for them to molt every year. That period allows the reproductive tract to rejuvenate for the next laying cycle.
Yeah, some are going thru molt. I have 3 hens in a large dog crate because their feathers have not grown back yet. I know light is a big issue we struggle with, aside from having a very long extension cord going to the back of the 3 acre property, we can't do much about it. The lean to barn does not have electric and it would cost far too much to have it ran. It has not been sunny here either. Lots of dreary, fall days. So even as they free range, no sunlight.
Age and breeds....hmmmm.
We have some golden comets, rhode island reds, 2 barred rocks, astralorps, and one white hen. They are all 2+ years old. Have all been laying great until about a month ago when the weather turned,
We have some rhode island reds, 2 jersey giants & another white hen that are 1 year old.
We have some rhode island reds, rhode island red/speckle sussex mix, easter eggers, black cooper French marans, blue cooper french marans, olive eggers, australorp, buff orphington born end of March 2014.
We have 1 rhode island red, 1 australorp, 1 Dixie rainbow, 1 white born end of April 2014.
Last but not least, we have 1 australorp born early July 2014. To my knowledge, none of the new pullets from this year have laid any eggs. So, the youngest is just 16weeks old, but the other new ones are all 24+weeks old. We were getting 2+dozen each day from our 2year girls in spring and early summer. Now nothing from anyone.