A question for you, Rodrigues. Because Blue is a result of a cross between Whites and Blacks, and the white lines very often are a result of many years White breeding, by crossing the two colors, you get a very good outcross. Are the Blues (because good outcross has happened) generally bigger than the Blacks? and Whites?
Hey thorleif! The blacks definitely have the size and conformation over the blues. They are rapidly catching up though. There are not many breeders of good quality blues. Especially any that show. A good blue simply will not beat a good black. I have only seen a handful of whites and NONE reach the size of the blacks or blues. I have not seen a white large fowl in a show hall in about 5 years.
It should be noted, that the white and black cross to produce the blues was a rare occurrence, as far as I know, blues do not result from this cross any longer. When a black is bred to a white, black offspring result. These offspring carry the white gene. I bred by blacks to my whites in order to get a better conformed bird with a more docile demeanor and larger size.
Here in Europe the gene-pool is small, and Blacks (I think) in general are smaller than the Whites. I have noticet that Blue Jersey Giants often are bigger than the Blacks. I only have White Croad Langshans, and I have been sending eggs to a new breeder in Denmark. I have also got her some eggs from Blacks (9 White chicks from January and March, the Blacks has not been hatched yet). She is keen to start breeding a line of Blues, as well as breeding Whites and Blacks. She understands it is a long-term project, but she is only 30 (whereas I am twice that age), so she has the time to do it. She also has access to a German strain of Croad Langshans, both colors,so she has the perfect out-cross also for pure Whites and Blacks. As a by-note, Croad Langshans were imported to Germany from UK in the 1950's, so they are quite un-related now. I had some fairly small White hens a few years ago, but bred in a fairly small and poor-looking German-bred rooster, and size exploded the next couple of generations. This was a bit much, and some intricate questions wowen in, what do you think?
I have noticed that when a new bird is bred into a line, the size tends to explode. It may be the infusion of new blood or simply different characteristics of that bird. I tend to think that the infusion of new blood increases the size, but it can also cause issues in lines. Two different lines can cause poor size, poor head width, large combs, poor feathering...but it can also bring about good characteristics. Culling must be liberal when you bring in new blood, otherwise you can ruin your breeding program by keeping inferior birds. (Says the person with a pure line of clean-legged Langshans...)
another by-note: A guy over here has a strain of American Langshans, and he sais that they are basically what we call Croad Langshan, only since 60-70 years ago, there has hardly been any transAtlantic excange of birds. That means, that sometimes in the future (hopefully) somebody will be able to cross American Langshans with Croad Langshans, and the only selection they will have to do, is basically a bit difference in the lenghts of the thighs and the shanks, as you lot over there has been breeding for longer legs than us?
I would tend to agree on the leg length. Looking at your whites, I would like to see more leg length, but that is just because I have a certain way that I like to breed. The standard of perfection leaves "gaps" for the judge to have leeway, or open to interpretation. I prefer longer legs...I want a large frame with long legs, otherwise the bird doesn't look "complete". I have a male with shorter legs. He has excellent type, but has shorter legs (whether that was due to environmental factors or genetics has yet to be determined). Love his type, hate his leg length.
One large difference in the Croad and the American Langshan is that MANY people claim to have Croad. This is because people are searching for the plum-colored eggs that the Croad are famed for. I refuse to sell for egg color. I do not want what happened to the Marans happen to the Langshan. The American and Croad Langshans, other than the egg color and possibly tail width do not look too entirely different from each other.