Hens have spots on their combs

[RedheadErin]

Our two leghorn hens have some black, white, and yellow spots on their combs, which seem a little bit paler than usual. By comparison, the rooster's comb is bright, red, and healthy looking. Any ideas what gives?

 

[SkyWarrior]

Fowl pox? Or, if you've been experiencing really cold temps, possibly frostbite. But we're just getting into really cold temps here in Montana.

Oh, and