We build this to raise chicks/ducklings in so we can get them out of the house asap!
In cold weather we keep it in the garage parked on a tarp with shavings in it. It was originally wrapped with chicken wire on sides and bottom, but we were warned that coons could reach in and grab a chick, so we re-wrapped the sides with 1/4" hardware cloth. For nice weather it is rolled in to the yard so the chicks/ducklings can do some free ranging. It also works for a sick bay or to quarantine a new chicken.