2,    adults,    anatids,    animals,    aves,    birds,    canards,    dive,    dives,    ducks,    females,    fodder,    forage,    format,    humour,    humourous,    lakes,    laterally,    mallards,    move,    movement,    moves,    outdoors,    outside,    river,    search,    submerges,    submerging,    swimming,    swims,    waterbirds,    waterfowls,