George, yes there are a lot of Dorking folk that are not on the net. That is one of the frustrating things. Craig is a perfect example. He's written lots of articles about the birds, he's willing to talk. But he's not on the net. Heck he doesn't have a cell phone. He really has done a good job researching them and preserving them. I do not know what the quality is of his birds. My guess is that they are a good place to start a breeding program. There are probably others who know the history of the breed in this country as well as he does, but they are harder to contact. He's pretty much made himself the spokesperson.
I think reds are in the best shape of the varieties simply because no one could agree on what version of red was to be in the standard. So they were late getting in. More genetic variation as lines were consolidated. But we can go to RC birds. They didn't get into the standard, but are historically correct. The problem seems to be that few work with them for very long. Finding a flock older than 10 years is hard.
I think if it was me and I really wanted vigorous SGs and was willing to hatch like crazy and cull hard, I'd find out how to use Red Dorkings as an outcross altho there may be a better variety to use. YHF did it with his whites using SGs. He got good results but he had to cull a lot of birds.
The other option is try to isolate the gene causing the issues. Both options are going to be time consuming.
Jennifer
I think you bring up some interesting points, and on any level it is a fascinating project. I am more interested in the challenge of an effort of this sort than I am buying good birds. It is not for everyone though.
If I did not already have a difficult project, I would be interested in giving them a go myself. A fascinating breed with a fascinating history.
You seam to have a good feel for them. I like the interest in the history etc.
My question with the silver grays is how it would work concerning brassiness and bleed through. I noticed that there was a cuckoo variety, and wondered if using them with the reds, if you could not get back to silver. Then use them with the Silver Greys. I have also wondered if using Joseph's whites is not an option. I have wondered about a few things, but do not know the colors enough to comment.
Hatching like crazy is the fun part. Culling hard comes with it. These kinds of projects are a numbers game. It cannot be done well just hatching a few here and there. It takes a pretty big effort to get out of a hole. Some flocks more than others. I am more commenting on my own project than another.
You are right. A time consuming big effort. It is a labor of love of sorts. There is no glory in it. It is hard to post pictures and say see my pretty birds that someone else put together. It should be an enjoyable process though, if you like the birds. It requires a little thinking out of the box to.