When you say blue spot, do you mean the comb is blue in an area or it has a spot on it similar to this?
This is fowl pox and I've had one with it before, though the spots weren't quite as raised. Respitory distress is a symptom.
This is a page about treatment. https://www.backyardchickens.com/a/avian-pox-how-to-treat-your-chickens-for-avian-pox
This is fowl pox and I've had one with it before, though the spots weren't quite as raised. Respitory distress is a symptom.
This is a page about treatment. https://www.backyardchickens.com/a/avian-pox-how-to-treat-your-chickens-for-avian-pox
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