I have a question that I hope somebody can answer. I have four standard sized roosters left in my flock of Buff Orpington, Welsummer and BO/W cross birds. 25 young OEGB/bantam, about a 50/50 split on male and female birds. I also have Marek's in my flock. I've lost one 9 week old pullet to classic paralysis and one to cardiac problems at POL but what has really been hit hard has been my roosters. So far I have lost all of my mature birds at the age of 2 years or less. Mostly between 10 and 14 months. Two days ago I found a 10 month old OEGB cockerel dead in the coop. No symptoms beforehand, by all indications a healthy bird at bedtime who was dead the next day. At the moment three of my roosters (standard sized) are experiencing a strange cyanosis that turns the very back of their combs, tips and part of the main body of the comb at the back a deep blue. The cyanosis occures if they are or active, mating, or stressed and disappears when they are relaxed. One of these three also has Marek's grey eye. Has anybody with Marek's in their flock noticed thes symptom in your birds. Cyanosis in humans is generally caused by cardiac and or respiratory problems. I know that Marek's is generally known for producing tumors in the lungs or heart muscle. Is that what I am looking at? Along with the Ocular Marek's which is generally known for producing tumors in and around the optic nerves and brain. At the moment I am planning on pulling these four birds from the standard flock and into their own run and coop as I do not want them to mate with the resistant hens that are now over two years old and I'm thinking that removing them from the breeding pool will lessen their stress and extend their lives. Any thoughts?