True Ameraucanas are NOT Easter Eggers, they are a distinct breed.Araucana and Ameracauna are different.AmeracaunaAmeRAUCana( Easter Eggers) lay colored (typically blue-green) eggs and have beards and muffs.
With Araucana, if you have two parents both with the tufted gene, then yes, you can have some (about 25%) die in shell. The tufted gene is lethal. Not all of the chicks are hatched with the tufts, some are hatched with tails (though by standards should not have here in the US). A much more difficult breed.
Expecting my first Araucana chicks next week.
From Wikipedia
Confusion with Easter Egger chicken
The Ameraucana Breeders Club defines an Easter Egg chicken, or Easter Egger, as any chicken that possesses the blue egg gene, but doesn’t fully meet any breed description as defined in the APA standards. Further, even if a bird (that possesses the blue egg gene) meets an APA standard breed description, but doesn’t meet a variety description or breed true at least 50% of the time it is considered an Easter Egg chicken.
The American Poultry Association's American Standard of Perfection contains breed and variety descriptions of all recognized standard breed poultry in North America. This means if your bird does not meet a color requirement, it is in Easter Egger. However, it is highly unlikely to see an Easter Egger which meets all APA standards yet doesn't have the correct color. They are almost always mutt birds, or those descended from the Quechua.
While many hatcheries claim to sell "Ameraucanas", "Americanas", or "Araucanas", nearly none of them do. Most sell mutt Easter Eggers.