1,    a,    adults,    anatids,    animals,    aves,    bank,    beaks,    bills,    birds,    canards,    drakes,    ducks,    format,    lakes,    males,    mallards,    move,    movement,    moves,    open,    outdoors,    outside,    river,    riverside,    shores,    solo,    swimming,    swims,    waterbirds,    waterfowls,