flock of whooper swans flying

and anglia animal animalia autumn ave aves avian bill biodiversity bird birding birdlife birdwatching blue britain british centre clouds coastal common creatures cygnus east ecological ecosystem eurasian fall fauna feathers feet flight flock flying for habitat heavy honking hooper kingdom large migrant migration migratory natural nature norfolk ornithological ornithology reserve shore sky song south swan swans trust united water webbed welney wetland wetlands whooper wild wilderness wildfowl wildlife wings winter wisbech wwt yellow