How tall are the Japs? Hmm, they're short little things. Maybe just a bit bigger than a Coke can? Japanese are supposed to have short little legs, sort of their trademark. They can come with long/medium legs, but they should be almost too short to see when they're standing all upright and proud.
I have a trio of white Japanese bantams. I love them! They're friendly little birds. My little pullets have just started laying, but they lay well. The little cockerel still hasn't figured out his role yet, and its pretty comical to see him mating the ground while the pullets run away and shriek...