Lucky me I don t have this problem. My chooks have to deal with extreme heat . They don t know what cold weather mean.Mine lost theirs from frostbite this past December. Southern coops are made for hot and humid climate and not built for the kind of cold that we had.
But my guys have large combs I am working on improving.
Up at the new farm is it more wormer semi tropical weather lot of humidity lot trees( it is a forest any way)
I m like @chickengr don t like the cold.
Chooks man