I don't have chickens, but I do have ducks - 14 actually. Having researched bedding, I finally attempted to make pseudo nest boxes for my babies to lie in when they came in at night. I initially had 2 boot trays and a shallow plastic container about 2'x2' and filled them with shavings, shredded paper, and carefresh bedding. My hubs said I made them a salad to play in rather than lie in (which was partially true). Within about 3-5 minutes, 6 of the ducks were crammed into the plastic container with the others all around it and zero in the boot trays (filled with the same stuff). So, I forced the hubs to go out to Target at 10 pm to buy another plastic container.When I checked on the ducks after I heard him pull into the driveway with their second bed, I couldn't help but crack up when all the ducks that could fit were now in, on the edges, or surrounding a single boot tray...with zero now in the plastic container (the type I forced the hubs to buy).