Here’s the top view. So, is it red mite? I just went in the coop and, looking carefully with a flashlite, couldn’t find any. Hens are very sleepy and calm.
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To find red mites or roost mites take a clean white paper towel with you and after about 10

Mites are a type of spider and therefore have 8 or 4 pair of legs.
Lice are insects and have 6 or 3 pairs of legs