that sounds like detached aircell
where your eggs shipped
if they where they would have needed 24 hour resting to settle them and then a 10day no rotate incubation with then staning on pointy end
that is to help embryo get strongenough to be able to cope with detached aircell
with that...
Araucanas with Tufts have the lethal gene that causes them to die around day 18-21
what i understand it a tuft gene crossed with a tuft gene produces the gene to become dominent and kills embryos
if you use a tuft roo with a non tuft hen then one will be ressesive and hopefully that should...