Hay / straw has never really been a bedding medium for any contained animal as it does not really absorb any liquid and manure just sort of sits on i t unless it gets messy with water or pee (depends on the animal). It's more of a cover up type of thing. You have to use a good pitch fork to really get handle on it.
I will toss a new green flake of grass hay into the under cover run of my penned up chickens as they really enjoy messing it all around, eating the seed heads and just plain digging for whatever they can find. I guess it scratches good. I put fresh hay in my laying boxes once a month. All of the old gets scooped out and fresh laid in all fluffy. Takes me all of 10 mins tops. They spend the next day getting it just so for egg laying. For my hens it's more of an enrichment item than a necessity. I bed wiht a small amount of pine pellets on the hen house floor that I add water to and scoop that out of the hen house weekly. I don't get more than a drop in the bucket full compared to my horses
I will toss a new green flake of grass hay into the under cover run of my penned up chickens as they really enjoy messing it all around, eating the seed heads and just plain digging for whatever they can find. I guess it scratches good. I put fresh hay in my laying boxes once a month. All of the old gets scooped out and fresh laid in all fluffy. Takes me all of 10 mins tops. They spend the next day getting it just so for egg laying. For my hens it's more of an enrichment item than a necessity. I bed wiht a small amount of pine pellets on the hen house floor that I add water to and scoop that out of the hen house weekly. I don't get more than a drop in the bucket full compared to my horses