Been preoccupied lately--sorry for lack of responses here!
Definitely not me, no sir!
Aww, but the Blacks are so regal and clean...

Those Moderns were definitely full of personality. Made it soooo hard to walk away without any.

I tend to agree that this is a bit sudden for Marek's to be the culprit... Normally, Marek's comes on slowly and lasts weeks, sometimes even months. My best guess would be that they all ate something in common. Moldy food, weed sprayed grass, fertilizer pellets (though in Ohio this time of year some of those seem a bit unlikely...), something like that... Wish I could be of more help, but... Fingers crossed the rest of your birds are in the clear now.
AAAH, handsome guy!

Sounds like Phoenix is a possibility if he is a mix, although my pure OEGB boys have some similar tail feathers to him.