They love a bale of straw put in there too. They take awhile to shred it up. Make sure you take off the baling twine first. Once it rains on it flip it over for them if they havent totally killed it. They love the bugs under it and in it once it gets wet.
After putting some in their nest boxes, I stored the remainig bale of wheat straw in the hen house. Huge mistake. That stuff has been strewn from one side of the hen house to the next and is now down in the poop drawer under their roost, too ... covered in chicken poo, of course! I wondered why they were going in the hen house every day; I had hoped it was to check out the nesting boxes. Nope. It was to have a grand ole time playing in the hay!! D'oh!! Didn't realize chickens were just like little kids. What a mess I have waiting to be cleaned up.