I've seen that too. A huge~ but subtle to most folks~ difference in the performance and carcass on varieties within a breed. I guess it takes having experimented with all the varieties before a person gets to really see the differences. For the past several years I've had three varieties of Plymouth Rock in the flock and they are as different as night and day, but the White tops them all and in all ways, over and over. The rest seem to be a moon cast shadow of the White.Well....LOL! Allow me to be the voice of contention (like nobody saw that coming?) In terms of varieties of fowl being more dual-purpose than others, I would have to say that the Whites are the larger birds, yielding more meat, with the Barred birds coming in a close second, then the silver pencilled, then the Columbian and so on. It's been forever since I've seen a Buff Plymouth Rock with any real substance.
Wasn't directed at them, it was a general comment. The general ignorance that you cannot have a productive bird that meets the Standard is a fallacy and lie that gets propped up a lot around here. I have nothing but experience and knowledge to share.
I understood it! Wasn't complainin'.....isn't this fun?
