1,    a,    adults,    anatids,    animals,    atratus,    aves,    birds,    dives,    eat,    eats,    feeds,    fodder,    forage,    format,    lakes,    laterally,    move,    movement,    moves,    outdoors,    outside,    river,    search,    solo,    submerges,    submerging,    swans,    swimming,    swims,    the,    waterbirds,    waterfowls,