First time raising chickens, just need some basic suggestions.... - does the coop absolutely need to be insulated? - what height chicken wire would be a good idea? is 36" okay? - does the top of the run need to be covered with wire, or can that stay open? - is it normal for the baby chicks to get 'buttnuggets' of dried poop on their back ends? Any other suggestions would be nice, I'm reading a little out of the forums on litter etc, but I know there's a lot more info out there. Thanks!