I ordered ten straight run favs from McMurray's and had one all yellow chick that now at 3 weeks old only has white feathers and looks like your white hen....confused, i started researching...is it possible it's a white faverolle sport? is it rare? I'm in Talent Oregon, anyone nearby to breed with? I'll post pics later today when i get Home...
I posted a reply in your thread. But you should post updates in the Faverolles thread. There are breeders in OR and WA, but the only one I know of with LF whites is in IN. He lost most of his to a predator last year and is having to rebuild.
https://www.backyardchickens.com/t/268082/faverolles-thread/13640