I have only one (my Leghorn) that seems to get her wattles wet and it doesn't seem to be all the time. She had no frostbite last year, so I wonder if she rubs off the water in her chest feathers?
Electric waterers work, also there are heated bases you can buy to put your current waterer on or (this is what I use) there are heated dog water bowls. I use the dog bowls as I find it easier to dump the dirty water, wipe it clean with paper towels and refill and I don't have to take anything...
Looking good! I bet you have happy chickens.
I too would add hardware cloth along the bottom 3ft or so (up) of the run to help keep predators out. I would also add plastic around the run, leaving about 6-12 inches open at the top, to keep the wind out-not so much the snow but the wind.
My...