Right now I'm still working with my original trio and pair from Green Fire. Is anyone working with their second generation birds?Welcome!
As far as I can tell all OD chickens in the US are from Greenfire stock. That being said, they are a landrace so I interpret that to mean genetic diversity is inherent in the stock. That also means there is no standard. Perhaps those folks on the thread who have been selling hatching eggs might comment on how they are working on selection and diversity.
I was just down tending my 1 month old OD chicks. They wake up full of piss and vinegar, flying and sparring, lots of energy! they chatter all day long too.