highly detailed black and white vector engraving of a mallard duck in mid-flight, wings fully spread upward, dynamic motion, feathers meticulously drawn with layered etching lines, side profile view showing aerodynamic body and open wings, clean bold outline, slight background frame with distressed vintage edges, smooth flow lines suggesting air movement, inspired by traditional wildlife etchings and vintage field guide prints, pure vector format, no shading gradient, no text, elegant symmetry and line precision