I have guineas in an aviary, among other birds. We have wooden pole roosts set up in The corners of the aviary along with the halves of a metal hay bale cage for them to roost on. The guineas prefer to just sit on the cold rocks by the creek. One even sits in the water on a rock and his legs are i. The water. It is getting in the thirtys to twenties at night and we dont know what to do. Help please. Any suggestions will be tried.