The Eastern buzzard or Japanese buzzard (Buteo japonicus) is a medium to large bird of prey that is sometimes considered a subspecies of the widespread common buzzard (Buteo buteo). some scientists treated is as a distinct species starting 2008, but most people still treat it as a subspecies. It is native to Mongolia, China, Japan and some offshore islands. And at least various birds winter in Southeast Asia. It's similar to the steppe buzzard.