Have 10 hens, 3 Easter Eggers, 4 Black Australorps, 2 New Hampshire Reds and 1 lone Barre Rock who are all about 2+ yrs old. They have been great layers (4-6-7 eggs/day) up to about 60 days ago, then started reducing down to 1-3 and for last 3 weeks 0 eggs. Live in Houston, TX area and they get evening setting sun into run and edge of coop so light is less of a problem. I hated that I had to buy eggs this week. Even during molting last year they laid a reasonable amt of eggs. Over last 3-4 weeks have seen more feathers on ground; some hens losing some feathers and others have some growing back.
A couple of weeks ago, based upon evidence, did have something, probably coyote or even bobcat chase down a skunk into barn along common wall with chicken coop and kill it. It took a couple of days for me to figure out what had happened and took another couple of days for husband to have daylight time on a Saturday to clean it out of barn. I had to mix up skunk stink killer spray to spray down barn areas trying to eliminate the remaining odor. BTW Recipe: 1-32 oz bottle 3% hydrogen peroxide, 1/4 c baking soda and 1 tspn liquid dish soap (Dawn)-stir to mix up. Can wash dog or other pet with it if they get skunked. Got directions from vet. I mixed up a gallon and put in hand pump pressure sprayer and sprayed everything in barn area and it has killed the odor. But I think another skunk is coming around because I smell it on and off. Have to clean out the barn to figure out where it is trying to nest for winter and drive it out or kill it. Last time used chlorine tablets for septic tank down holes-haven't had a problem for a long time.
I imagine a skunk running for its life and being caught by whatever just on the other side of the coop wall must have made a tremendous rukus so don't know if that may have contributed to frightening the laying out of the hens or if it is just this apparent molting. Last year the molting didn't seem to bother them so much because they continued to lay. Of course, like us all they are a year older. ??