I am sure they can test for it but from what I have read and in talking to people most die in the shell during lockdown. If they do hatch they die within a matter of days.My cockerel, Darkness, had it first. Then my girl, Mohawk, who is scared of her own shadow, freaked out after the mean sizzle girls picked on her and she started with the wry neck. I treated them so many times a day with the Poly-vi-sol, Vit E and Selenium mixed in water and used a dropper. They made it and I'm so glad.
I don't know anything about Araucanas and that double tufted gene. Can they be tested to see if they carry the gene?