MY COB CHICKEN COOP
Don't know why this image doesn't show. Here's a link.
https://www.backyardchickens.com/forum/uploads/80084_img_9331.jpg
The semicircular walls of the night roost and laying area are made of cob - sand, straw, water and clay from under the concrete driveway that we removed...
Glad to know there's support out there for picking out by hand. I naturally do it that way because I'm too lazy to go and get gloves and what's a bit of poo? I always wash my hands with Dr Bronners before dealing with their food (or mine!) though.