An air-actuated wing assembly includes a wing body; at least one half-wing portion having a generally elongated, flexible, cupped wing panel extending from the wing body; and an attachment mechanism carried by the wing body. In some embodiments, the air-actuated wing assembly includes an assembly base; a wing support assembly carried by the assembly base; at least one half-wing portion having a generally elongated, flexible, cupped wing panel rotatably carried by the wing support assembly; and an attachment mechanism carried by the assembly base. A fowl decoy is also disclosed.