I got this rooster from Sandhill Preservation Center. He was with my black orpingtons, but he is clearly not a black orpington. I looked through the catalog and the only bird I can find that even comes close is the longcrower. But he says they have the occasional golden neck and hackle feathers, these are silver. He is 4 months old, matured much quicker than my orpingtons, was the first to crow (not especially long) and has a bigger comb than the others. Could he be a mix? I need to butcher or rehome him.