I can't tell you exactly why the purple sheen shows up for sure. But I can tell you what I do remember. A purple rather than a green sheen indicates the bird doesn't have the proper genetics for black coloring. The right melanin enhancers are not present. If it has both purple and green sheen, as in purple one way then green when the light hits it another, then that is acceptable. But my experience is that diet can help get rid of the purple sheen in a bird like that. And by diet I just mean a really good ration with something like calf manna added to it. None of this vegetarian stuff either. Real "meat by products" and even a splash of oil from time to time.I did just a tiny big of research and all I could find was the purple is the mahogany gene. I didn't do any further research, because I knew from other readings for my breeds you don't want to breed mahogany genes forward.
Anybody else have anything to add? or was the info I read way off the mark?
Is this for any breed or a certain breed? I mean, I only ask because I thought mahogany was a desired color in certain breeds? I know there is a mahogany orloff...and I thought a Buckeye's coloring was called mahogany too?
[Edited to add] Completely off topic from the purple feather, but I wanted to know if the Partridge Chantecler is a heritage breed? I see white is another variety but I'm not fond of completely white chickens. The white one was recognized in 1921, and the partridge was 1935 so according to dates... should be a heritage breed right?
Do take into consideration though that I've only raised 3 broods of black chickens and not an old timer. I just look at my Sugar and remember that first year when her and all her hatch mate's feathers shone both hues. Now she's finishing her molt and all her new feathers have only a green sheen, no purple in them at all.
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