Mine goes into the compost pile mixed with lawn clippings and either manure or topsoil. I am also experimenting with laying it down straight in the garden ,covering it with a thick layer of lawn clippings and watering heavily.
I have a 10x10 compost area that the chicken have access to. I roto-tilled it today after I added my CX feathers to it. The birds picked up where I left off.