1,    a,    adults,    anatids,    animals,    aves,    birds,    catnapping,    catnaps,    doze,    dozes,    dozing,    format,    lakes,    move,    movement,    moves,    outdoors,    outside,    resting,    rests,    river,    size,    sleep,    sleeps,    snoozes,    snoozing,    solo,    swans,    swimming,    swims,    vertical,    waterbirds,    waterfowls,