Vincent is either a type of black hawk or a roadside hawk. It's feathers are pale blue in color, with only the underbelly having black feathers. It has thick eyebrow-like feathers over its eyes, giving it the usual bold look a hawk has. It has a small very pale brown colored beak and brownish orange talons. It also has a small crest on back of it's head.
It doesn't have a tail throughout the YFMTS series. But it does have a tail in art for the official shirt designs. It has a fan-shaped tail in those designs.