Definitely need better pictures, ones where he's "up" and moving. But even as a non-expert on Orpingtons (though I started out with some nice show type ones) he doesn't say "Orpington" to me. I don't think I ever caught mine standing like that and looking that compact and small and downhill over the back.
Also, "pure" is kind of a sticky concept in chickens. You really can't tell by looking whether a bird is really purely bred or not. He might be, he might not be. It's not really material either way since I don't think he's what you want to breed regardless.
Also, "pure" is kind of a sticky concept in chickens. You really can't tell by looking whether a bird is really purely bred or not. He might be, he might not be. It's not really material either way since I don't think he's what you want to breed regardless.