2,    adults,    aggressivity,    anatids,    angry,    animals,    argues,    atratus,    aves,    beating,    beats,    birds,    disputes,    disputing,    fight,    flapping,    flaps,    format,    lakes,    laterally,    move,    movement,    moves,    outdoors,    outside,    quarreling,    quarrels,    river,    splashes,    sunny,    sunshine,    swans,    swimming,    swims,    waterbirds,    waterfowls,    wing,