4,    adults,    animals,    Ardea,    artiodactyl,    Artiodactyla,    aves,    beating,    beats,    birds,    egrets,    flapping,    flaps,    format,    herons,    hippos,    lakes,    laterally,    mammals,    move,    movement,    moves,    outdoors,    outside,    river,    stands,    summerly,    summertime,    summery,    sunny,    sunshine,    swimming,    swims,    wing,