That has me worried too
That is why I would like to see a picture.
If the wattles dip into water... and the temperature drops, the water on the wattles may make them freeze
Do not rub them
Do not try and heat them
You can gently put Vaseline on them to help heal and protect them.
You can also use Vic's vapour rub, its got a little med in it that would help heal any wounds and keep infection out.
Moisture in the air makes chickens cold by absorbing body heat.
Combs and wattles are therefore more likely to freeze in damp housing than in dry housing.
Since cocks don't sleep with their heads tucked under a wing, as hens do, cocks are more likely than hens to have their combs and wattles frozen when temperatures dip during the night.
Cocks with large combs are more likely than other to be frostbitten.
Frozen combs and wattles look pale.
If you discover the condition while the part is still frozen, apply a damp, warm cloth (105 F, 40.5 C) to the frozen part for 15 minutes or until it thaws
DO NOT RUB.
After the part has thawed gently apply an antiseptic ointment such as Neosporin.
Isolate the bird and keep an eye on it to see that the comb heals properly
Frozen wattles and combs are more likely to be discovered after they have thawed and become red, hot, swollen, and painful.
The bird doesn't feel like moving and is listless, and loses interest in eating
If the part has already thawed, warming it is no longer necessary.
Gently coat the part with Neosporin and isolate the bird
After the swelling goes down, the skin may peel, the part may itch, and it may be sensitive to cold for a while.
It may turn scabby, develop pus, and eventually fall off. The suffering cock will continue to lose weight and may become infertile
If the comb or wattles were seriously frozen, instead of swelling they may remain cold, begin to shrivel, and eventually die back
Other chickens may peck at the affected part making things worse
If the comb or wattle turns black, the affected tissue has died and gangrene has set in - the comb or wattle is no longer receiving a blood supply and must be surgically removed
