My mower shreds to about 10:1.
A bag of shredded is like 10 bags unshredded, composts faster, and is so much easier to work with.
My birds are "working" for me to make my compost, as it has a greater value to some than my eggs...
I use a lot of leaves, since I have a lot of trees...
I shred them with the tractor mower, then sweeper collects them.
I pile in an unused area, and put around 100 gallons in the run every 2 weeks, all spring and summer, a lot of leaves...
This makes my compost, a lot of compost...