I would like to pose a question for thought in regard to Randy's pictures of the wing feathers on his Wheaten male that showed up white as a 3 year old bird and it not being evident as a younger bird....
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Every animal alive as it reaches a particular age begins to gray.....horses, dogs, cats around the muzzle, etc. There's no reason a chicken would not do the same thing in some way. Perhaps this wing feather beginning to come white as a bird reaches an older age is related the same way that the gray muzzle is to a dog.....I have a BCM that has done the same thing. He had excellent color as a younger male and as he got older he began to have some mottled white show up in the lower wing and a tipped feather or two in the tail. He had NO white after his juvenile molt nor as a year old, etc. Something besides genetics is in play with this but I only have a theory....
There's just so much we don't know but I do enjoy this discussion thread as I work with my Wheaten breeding program. It really gives me some things to think on. I appreciate everyone sharing. So much work to do !!