Never use straw or hay just shavings suits them fine . All of them are back together in the big hutch in the shed so there pretty sheltered . As for the water bottles a put them in thick socks and have plenty spares just incase . I will be starting the season in the next week or two got to go and clear sum cover on one of the permissions as farmer been seeing rabbits kicking about so need to get that sorted and keep him happy .