I made a post yesterday in the behaviours forum, but its way down the line, and it seems that this is the more appropriate place.... After a thorough exam as to why there is blood on some of my roosts and a bit on the wall.... One of my Wyandottes is missing her toenail. It seems to be a big black scab right now. What should I do? Will it grow back? How does this happen and how can I ensure it doesn't happen to the other girls? Also, I have several chooks, maybe 6 or more who have tiny scabs on their combs. Even on the rosecomb birds. Is this from frost bite? I've been working on getting humidity down, but perhaps need to try harder? It hasn't yet gone below -15C in our coop, and we have a heatlamp for huddling under....though its off center. Perhaps I should center it more? Nobody can really get any closer than 18" from it. Its about 2ft from the ceiling which has feed bags stapled to it, and that's my comfort level with that for safety. I've been working on a bigger vent for the coop, so perhaps that should be my focus?