Wish I could help but even looking on line I couldn't find out anything. Are they yours?
I have no idea if this will help but i found this here on BYC https://www.backyardchickens.com/t/440724/wild-goose-thread
Not knowing if they are wild or a mix or a specific breed. What do you know...
I have no idea but they are beautiful. are in the USA? they look like a pic someone posted once here but i don't think they were in the US. One actually reminds me a bit of my American Buff. Coloring is similar.