They do just die. It is said that if dogs died at the rate of chickens, most people wouldn't keep dogs.
I've had chickens die from cancer, heart attacks and fatty liver syndrome. All confirmed by necropsy.
That's because they're experts at hiding illness. If they seem sick, they know their flock members may kill them for the well being of the flock.
That sounds great. It has been a while since I've trolled Lake of the Ozarks for Largemouth, Smallies and Walleye. I'm overdue.
Charge on.
I and my hens like excelsior nest pads.
Plastic nest pads are washable.
There are several sources for both so I'm not recommending any one single source. Just google it.
https://americanexcelsior.com/wood-fibers/applications/excelsior-poultry-pads/
http://www.flemingoutdoors.com/kuhl-plastic-nest-pads.html
Bonus!!!