Okay. First of all, EEs aren’t a breed. I don’t even think they can be called a hybrid, since there is not set rules for what parent birds need to be used. A mutt sounds like a better term to me.
I have a mutt dog. If you squint, he sorta looks like a beagle. I could say he was a beagle, but anyone with half a brain cell could tell me he wasn’t. I could reply with “ But they basically have the same genes.”, and that person would probably stop talking to me. If I bred him ( he is fixed, don’t worry) to another mutt, the puppies would also be mutts. They wouldn’t breed true. If I bred him to a real beagle, the puppies still wouldn’t be beagles. If I entered him or a puppy in a dog breed competition, I wouldn’t be able to enter him as a beagle. Now, if you couldn’t tell, you replace dog with chicken, mutt with EE, and beagle with ameraucana ( I’m sorry if I spelt it wrong, I can never spell ameraucana correctly.)
I’m sorry if this went a bit off topic, but it’s a good example in my opinion.