These 2 boys stay in a pen together. The darker necked boy in the back is older, lost one eye through an injury and is a BS. Can you tell me, is that why he has a darker blue neck than the younger boy in front, who is a year younger and split to Bronze? The one in front is one of my new boys and I love the green/blue shading on his neck. He is what is considered wild type but I suppose some folks just say barred wing. I am just interested in the neck color. Does the Bronze make it a more green sheen? Or is it the BS vs barred?