Sometimes I have noted depression in my hens when I abruptly changed from free ranging to confinement. But this passes and they become happy again.
In the meantime, keep them busy. Hang a head of cabbage for them to peck at, get a flock block or throw treats out for them every day such as very short (2-3") grass clippings, clover leaves, dandelion leaves, or black oil sunflower seeds/millet.
A little bowl of warm oatmeal is yummy, as are melon rinds, or bread ends!
You can make them a dust bath with some sand, DE, ashes from the woodstove when available, and dirt. You can use a concrete mixing tub or raised bed area for this- make sure it is out of the rain.
Give them perches to hang out on- a tree branch works nicely.
I like putting a pallet on concrete blocks and they go underneath for naps, and preen themselves on top of it.
In other words, a chicken playground!
It is a good idea to have golf balls or fake eggs in the nests where you want them to lay.
If you want to see true chicken enjoyment, dig up a square of sod and deliver it to them like a pizza. They will tear it to bits and eat every green thing off it.
