Flock of mute swans walking on field in winter in Poland

mute swan swan field crop winter bird frosty poland cygnus olor flock cygnus wild uneasy wildlife birdlife birdwatching bird watching ornithology big bird large bird waterfowl waterbird migratory beautiful majestic walk group countryside overwinter pest nuisance land no people nobody real time static shot sunny day morning nature environment climate change white orange bill cob pen alert bevy rural