My hen has a frost bitten comb!

[Chicks Galore3]

Thankfully I knew that. Thanks for all the help!

 

[Chicks Galore3]

Update- I figured out what happend to her. She sometimes sleeps on a ledge that is in the coop- I was sitting on the ledge, and I got scratched on a screw that was sticking out- I also saw some dried blood below it and on the ledge- lightbulb! I am think she got it caught on the nail and tore it off. Ouch, poor bird! She is all healed now, thankfully.