A detailed black and white vector illustration of a flying mallard duck, in vintage engraving style. The duck is shown in side profile with wings fully extended upward, feathers intricately detailed, and motion lines suggesting flight. The style should resemble hand-etched ink or woodcut texture, with bold contrast between light and shadow. No background scene, no frame, no text. Clean composition with sharp linework suitable for logo or T-shirt design. Centered subject, isolated on plain background.