Along this topic of Mareks resistant breeds, are any other landrace breeds also resistant like the EF?
I'm thinking icelandic, or swedish flower hen, swedish black hen, all off which are significantly more cold hardy than EF.
I could not responsibly bring an EF into my flock knowing they are not...
Thank you for posting all this information! I also read through your article about living with Mareks in your flock. I am hoping to fnd out for sure if that has been the mystery killer of 3 of my pullets in a few days and 3 more with similar symptoms in my flock of 24. Ugh such a heartbreaking...