Please help me understand what's wrong with my little one. I had an Ameraucana pullet die at 17 weeks old on May 12 of avian leukosis. I had an Ameraucana pullet die at 18.5 weeks of Marek's on June 5. Now my 16.5 week old lavender Orpington named Opal suddenly has a grey comb. I hope you can understand why I am so worried. It's just her and her one-week-older lavender Orpington sister left. She has a funny quality to her voice, what I interpret as a honking and what my boyfriend hears as raspy. I thought she was just undergoing a change in her voice/puberty and wasn't worried about it. She is acting just the same, active and jumping on laps. She's interested in eating and drinking just like always. It has been raining constantly, and their run will just not dry out. It has also been in the 60s-70s degrees F. Here is her sister, Pomona, for comparison. The base of their combs (the flat part that isn't beak anymore) on both chickens are dark/black. Please, please, tell me what you think is wrong and what to do about it. I am ever grateful to the help found here.