Looks like a Black d'Uccle. Strange, too - the variety seems to be quite uncommon (Mille Fleur is the usual one), yet this is the second one I've seen on BYC this week. If you don't mind asking, where/how did you happen to acquire her? Both her and the other one I saw seemed to be a pretty nice quality bird, which is surprising because usually when people have a bird who's breed they don't know the breed of, it ends up being hatchery quality. Yet both of these have looked like pretty nice breeder stock birds.