Test him out. If you saw my pictures a few pages back, you'll notice my pullet had very loose wings until week 19. Now they are tight and very nice.When I checked his wings today, there are no gaps of missing feathers but they feel different, almost like they have a twist to them or something. He was free ranging with turkeys and a lot of lf were I got him from. I don't know what he was being fed or anything else. I can try a hatch from him and check the chicks wings and go from there, I'm not sure I even want to keep him but I don't have anything else to put with my black girls but my Colombian roo or my red partridge and I really want black chicks next spring.
Also notice that my really old Delaware hen has some twisting in her shafts. Could it be something with age? Do you know how old he is?