adults,    animals,    aves,    bicolor,    bicolour,    birds,    black-white,    cloud-free,    common,    flies,    flight,    format,    laterally,    outdoors,    outside,    size,    summerly,    summertime,    summery,    sunny,    sunshine,    swallows,    terns,    two-colored,    two-coloured,    vertical,