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

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