White Swans,in Kushiro Shitsugen,Hokkaido,Japan,Filmed in 4K

group of animals crowing swan animal migration wetland mute swan duck - bird animal wildlife kushiro shitsugen national park animals in the wild water bird herd bird birdsong marsh two animals animal vertebrate named animal animal nest environmental conservation four seasons environment hokkaido national park one animal nature animal wing north flying 4k beauty in nature white tourism protection landscape cute season japan animal body part outdoors travel winter kushiro subprefecture beauty autumn social issues lifestyles autumn leaf color