black comb not cold

Dhkoenig

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Hi All - today I noticed two of my hens have what looks like frostbite on their combs! It is not cold here - in the last 24 hours, when I noticed the black tips of the combs, it never got colder than high fifties low sixties. The ONLY thing I did differently than usual is I opened the windows of their coop which I have left closed at night for the winter so they can stay warm. Last night and the night before I left them open overnight because it was warm. We have chicken wire on the outside of the windows for predator protection but why would my girls have black tips on their combs all of a sudden one day. It is not spots like some of the diseases - not black or purple spots, just the tips and outline of their combs are charcoal grey/blackish.
 
Can you post pictures? Are their combs very large? Sometimes it can be normal for dark on the comb if it is just the tips or the rear of the comb. Does the color change during different times of the day? Are they dehydrated at all?
 
Can you post pictures? Are their combs very large? Sometimes it can be normal for dark on the comb if it is just the tips or the rear of the comb. Does the color change during different times of the day? Are they dehydrated at all?
I will go grab a picture and send it in a few. It seems to just be the tips. When I googled, it said it could be dehydration but they have the same water as always - we use a galvanized feeder and I refresh it every day and it has electrolytes and vitamins in it. So weird. I did leave the window open the night before it happened which I usually don't - that would be the only thing different. but I doubt it even went below 50. I think it was low 60s. I will send a pic when I go down there
 
Can you post pictures? Are their combs very large? Sometimes it can be normal for dark on the comb if it is just the tips or the rear of the comb. Does the color change during different times of the day? Are they dehydrated at all?
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The combs appear to have been injured, possibly by rubbing on metal fencing or being pecked. Have any of the other chickens been chasing them?
 

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