I actually came on here to ask this question....and found this article!
However I'm still posting since I've gone through all the possibilities and still can't figure out why my hens have completely stopped laying for over 6 weeks now. I have a huge assortment of birds or many breeds, ages, sizes, etc. My oldest ones are about 2 years old. The youngest ones around about 6 months. And there's everything in between. They're a good weight as well, fat even.
They have a huge indoor area, it's about 20ftX14ft and about 10ft high. There's also a screen door on each side allowing for ventilation and light. One door we keep open as it leads to a giant outdoor 22'X20' run.
I'm currently feeding the girls a mix of mostly layer (Kalmbach brand) mixed with a little oats, cracked corn, and the occasional bit of beet pulp and table scraps.
These birds have not laid a single egg in months. It just started getting a bit chilly here in western PA, the birds finished their molt weeks ago, and even so you'd think I'd get the occasional egg from our large flock of about 60 birds. In fact I had a couple hens escaping regularly, and I found that one of the escapees had been laying her eggs in a little nook in the barn wall 3 feet from the coop. However never a single egg in the coop. Not even evidence of a broken one. They even have feed almost 24-7, in the least the feed hopper may be empty but there's a scattering of seeds on the ground that hungry birds would readily pick up.
I've recently moved them to a friend's house due to a problem with flooding and because we are currently moving as well. Their new home (which they've been in for over 2-3 weeks now) is a large rubber matter horse stall. They still get plenty of light and feed, though i've increased the ratio of layer pellets to everything else. I've given them loose hay to nibble as well.
I got one egg the day after I moved them, and I'm not sure what to attribute that to.
Their enviorment is super clean, so are food and water thingies, they have ample room and light, they look fantastic, no ugly feathers, they're well fed....
We really haven't lost a whole lot of daylight and it's not super cold, It jsut doesn't make sense that every bird will have completely stopped laying by now.
Ok...what am I doing wrong? ideas?