Black stuff on hen's comb

[lylak]

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This is on a 5 month old sex-linked red hen. I noticed this last week and at that time it was just a dot or two. I thought it was blood at the time. Now it seems to be spreading? Could it be frostbite or early fowl pox? Any help is appreciated. Thanks!

 

[Brandi Leigh]

Could be frost bite. How cold has it been where you live?

 

[lylak]

It did get down to below freezing in the past week or two. I had to break the ice in their water 2-3 days in a row. Just not sure why it appears to be spreading. Maybe that is just my perception since today was the first day since last week that I have been able to spend a lot of time with my girls. I'm just anxious because I don't want my other chickens to get sick if she does has something catchy. Thanks for your response!

 

[Eggcessive]

It looks to me like peck wounds because of the blood. I would watch it--if they are peck marks they will turn black. If not post another picture.

 

[lylak]

Is there anything I can do to prevent it from happening? Do hens or roosters typically peck like that? Forgive my ignorance please, I'm new at this. Thanks for the help!