adults,    anatids,    animals,    aves,    birds,    canards,    Dendrocygninae,    ducks,    format,    grassland,    greenfield,    laterally,    meadows,    of,    outdoors,    outside,    pasture,    red-billed,    summerly,    summertime,    summery,    sunny,    sunshine,    swarms,    tree-ducks,    waterbirds,    waterfowls,