I had a wonderful roo (who is still going strong as someone else's roo now) who's comb would go really dark especially on the tips - I too thought it was a circulation issue at first but after watching him and seeing how he was acting absolutely fine and how it would come and go with no other symptoms, I just decided not to worry. As I say he is still going and even at 4 1/2 years old he is fathering many chicks....
It sure sounds like the testosterone levels could explain my roos symptoms - what do you think about yours? Is he looking healthy otherwise? Is there any other symptom that is causing you concern?
