Best of luck. My guess it's a respiratory issue or a cold issue depending on how cold it is when it rains. I had a roo who's comb tips would turn purple blue in the winter when it got below about 45F. However, he had a huge comb. It started in him at about 2 years old.
My Rusty's comb looks this way today.. and is cool to the touch. Actually, it is half of his comb, the back half. I think he has been eating some of the layer feed.
If I make sure he doesn't get any more layer feed, will his comb return to the beautiful red it was?
Probably not. I don't think the restriction/lack of blood to the comb tips are due to diet per se. If he feels cold, is chilled, or needs blood somewhere else in the body, his comb tips will probably stay blue.
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I looked this up, and I may have to buy some rooster booster. The only thing is that I haven't seen any runny poo (like from worms) so I hate to dose him with un-needed meds. But it is certainly good information to have! Thanks!
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Thank you - that is very kind. I think the pattern I'm seeing is that the blue appears toward the end of the day. In the a.m. his comb is red. I fear this may be an oxygen insufficiency issue that gets worse as the day wears on. He's kind of sleepy too -I''ll catch him with his eyes closed while standing up out in broad daylight - I wasn't sure whether to attribute to a minor molt he's experiencing. This boy - I love him so. 7 years now.