Ok, basics. They need water, food, shelter and safety.
Although I have a burn running through the garden mine are in a secure run, with an old dog kennel to live in, no door, but a large dog cage attached, and they are shut in overnight. Shed is filled with straw and shredded paper. The run did have grass but there's a lot of it gone.

They have a hard plastic childrens' paddling pool to puddle about in. I feed mine layers pellets, bread, vegetable on short date from the supermarket. They get to roam round the front paddock (about half an acre) fro about 4 hours a day, and they occasionally go down to the burn but don't stop in it. I have four girls and a boy and get 4 eggs a day. HTH