Here's an opinion that might(read: will probably/definitely) REALLY crinkle some noses... But the intention is not to troll... just to throw another thought out there...
*Deep breath*
here goes.
The Catch All term, "Easter Eggers", should probably be used like "Brown Layers" or "White Layers" or "Tinted Layers" or "Chocolate Layers"... And it should include any individual bird or breed that possesses the blue egg gene... Pure Breed or not... I've seen some hatcheries use the term "Rainbow Layer" which suggests a variety of genes and egg colors... and as such, "Rainbow Layer" really ought to be the interchangeable term for a "Mixed Breed Easter Egger".
And I also think Ameraucanas as a breed should probably include green eggs as well as blue eggs in their standard since they can and often do occur and are a result of the breeding done to create the Ameraucanas to begin with.
Which would mean...
Easter Eggers would include Cream Legbars, Araucana, Ameraucana, and Mixed Breed Easter Eggers.
If you boolean these terms out... they would be distinguished thusly.
All Araucanas are Easter Eggers, but not all Easter Eggers are Araucanas. They lay ONLY blue eggs. This is their breed standard (insert standard here)
All Cream Legbars are Easter Eggers, but not all Easter Eggers are Cream Legbars. They lay ONLY blue eggs. This is their breed standard (insert standard here)
All Ameraucanas are Easter Eggers, but not all Easter Eggers are Ameraucanas. They lay ONLY blue or pale green eggs. This is their breed standard (insert standard here)
All Mixed Breed Easter Eggers are Rainbow Layers/Easter Eggers, but ZERO Mixed Breed Easter Eggers/ Rainbow Layers are Araucanas, Cream Legbars or Ameraucanas. Because their heritage is all over the map... lay the gamut from blue to green to olive to brown to khaki to tinted. There is no standard for a Mixed Breed Easter Egger.
There... Now I've done it...
I will now enter into a witness protection program and move into an unmarked fallout shelter in an undisclosed location so that I may survive the wrath of The Araucana Folks, the Cream Legbar folks, AND The Ameraucana folks. *runs away*
We WILL hunt you down and we WILL find you
I totally agree. But on the hatchery pages under "White layers" and "Brown layers" they have APA recognized BREEDS. I wonder if the hatcheries have a mindset of "here are the BREEDS we sell" and since EEs are NOT a breed they just can not convince themselves that they CAN sell a "non-breed" bird that DOES have some "expected" characteristics.
Given, I would guess, that the vast majority of the hatchery chicks are sold to people who want cheap chickens for meat/eggs/yard art", they aren't going to tick anyone off selling "rainbow egg layers" as a "type" but not a "breed". You would think they would tick off MORE people selling birds that aren't what they are supposed to be (especially in cases like Ideal who, when challenged, STILL claim they are selling Ameraucana. My 2 girls are a million miles from any APA recognized Ameraucana color. They are NOT Ameraucana). If they have breed standard Ameraucana, by all means sell them as such. Otherwise list them by Gifa's description. Heck, the hatcheries KNOW what they are crossing, they COULD even offer "this crossed with that, would be expected to have these traits" non-breeds.