My Langshan roo was the pinacle of health two days ago. Today I went into his pen and I noticed these little tiny insects on him. Today was the first day I opened the windows on his pen because it was 65 degrees today. Tonight when I went in to close the windows I noticed his comb (which is normally bright red) the end was turning dark....He is a show bird and I am terrified and want to reverse whatever this is asap. What would cause his comb to turn dark like that?