@silky smooth That is a stellar article! If my birds ever get frostbitten feet, I know where to look for help! My roosters do have frostbitten combs. This year, all the ventilation, vasaline and triple A in the world, did no good. They walked on ice and snow all winter, feet are fine. One rooster was smart enough to tuck like a hen so his comb is not so bad. I'm watching them but it looks as though the frostbite is self limiting and some of the black parts look like they will fall off on there own. No one is smelly, sick, blistered or deterred from daily activities.
@lauranickerson you should be giving your bird some kind of internal antibiotic like penicillin. The swelling in the hocks is probably inflammation, the bird's own anti bodies and fighting forces are trying like hell to counteract infection! If this happened to you, you would be in hospital on aggressive antibiotic treatment! Do the same for your feathered friend, please! We are here for you and will support you any way we can!