Welcome to BYC
Frostbite is dangerous. The tips should fall off, but theres a chance of instead getting infected which can kill. Infertility is also caused by frostbite.
Don't worry with the vaseline, it's not going to help his comb. Put a little bit of neosporin on the frostbitten tips everyday. If it gets infected, you'll
have to cut off the black ereas with a sharp pair of scissors. In the future, I'd lock him inside the coop at night. Overall it will keep him safer, and
not only from the frostbite. Be sure the coop isn't holding humidity - humidity causes frostbite. There should be plenty of ventilation, (Above roost
level) and also consider putting in a heat lamp to make it slightly above freezing in there. We, ourselves, dub our birds to prevent this all together
on the comb and wattles. One's opinions on this is differ from the other's, however. Wishing you luck, he's a pretty roo!!
Quote:
The tips of the comb will not come back, sadly.
Ukiah