Here is another thread that might be of interest.
https://www.backyardchickens.com/t/249618/show-off-your-delawares-pic-heavy
Some people take me wrong when I say what I’m about to say. I highly respect people that breed for show. I’ve played with breeding and genetics on a much simpler basis and what they do is not easy.
I look at it that the SOP was developed so people can compete and show their birds against each other. Pure show birds have very little to do with the functionality of the original breed in many cases. Body shape and conformation go a long way to define a breed so there is some correlation there. I’ll use Delaware as an example.
The original purpose of the Delaware was as a meat bird. Some of the important characteristics in developing this breed were conformation, how fast they grew, skin color, and the feed to meat conversion rate. They were made a light color because a plucked carcass is much more attractive if you cannot see the pin feathers. They needed to handle confinement well. One of our forum members, I think it was Imp, had an old advertisement where someone said their Delaware chicks could reach 4 pounds in 10 weeks. That was considered great then.
There can be a lot of discussion in what some words actually mean, but to me these are the types of characteristics that make the Delaware a heritage breed, not necessarily all the SOP things. Things like number of points on a comb or eye color are not there to put meat on the bones. Those are purely for competition purposes. There are some things like egg shell color that don’t really apply to productivity or show but they help define the breed. There are plenty of other people that consider the show qualities in the SOP as what describes a heritage breed. Choose whichever definition you wish.
The really good show bird breeders sometimes have different lines to produce a show rooster versus a show hen. If you have two separate breeding lines for the sexes, is this really a breed or are these two subsets to a breed?
This is my opinion. You’ll find people that are really passionate about their Delaware or any other breed that won’t like what I’m saying. They are rightly proud of what they are doing. A show bird is a beautiful bird. But it is not necessarily a productive bird.
An example. A yellow skinned hen will lose her yellow color if she lays productively over time. That’s one way to tell a yellow skinned bird is a pretty good layer, that she loses skin color. If you enter that hen in a competition, she will not score as well as a hen that does not lay very well unless you enter her right after her molt. They regain skin and leg color during the molt when they quit laying. So if you select a yellow legged hen for leg color, you are generally selecting against good egg production.
I’ll give another example. Most show birds are fairly large. This makes them inefficient egg producers. This does not mean they don’t lay a lot of eggs; it means they have to eat more to produce those eggs since a lot of what they eat goes to maintaining their larger body.
I don’t know about Delaware specifically, but there are a very few breeders for certain breeds that are trying to produce a bird that has the SOP traits well enough to show, breed for productivity, and breed for behavioral characteristics the breed is supposed to have. These are the ones that really make life hard for themselves.
As I said, this is my opinion. If you talk to Delaware breeders (or any other breed) be a bit careful what you say. Some will get highly offended at what I just said. They are really passionate about what they are doing and truly believe they are trying to carry on a tradition of what the breed was meant to be.
I don’t know if you will get anything out of what I wrote that will help you. Maybe it will help you decide on what traits are important to you. If you don’t know what traits you are looking for, you’ll probably be disappointed in what you get.
Good luck!