4,    adults,    anatids,    animals,    aves,    Babies,    Babys,    birds,    chicks,    eat,    eats,    feeds,    fledglings,    fodder,    format,    hatchlings,    immatures,    juveniles,    lakes,    move,    movement,    moves,    outdoors,    outside,    river,    swans,    swimming,    swims,    the,    waterbirds,    waterfowls,