1,    a,    adults,    anatids,    animals,    aves,    bicolor,    bicolour,    black-white,    canards,    cleaning,    cleans,    ducks,    format,    lakes,    laterally,    males,    move,    movement,    moves,    outdoors,    outside,    preening,    preens,    solo,    summerly,    summertime,    summery,    sunny,    sunshine,    swimming,    swims,    two-colored,    two-coloured,    waterbirds,    waterfowls,