White-fronted geese flock resting on flooded meadow during migration

danube delta large group of animals waterfowl greater whitefronted goose flock migrating migratory whitefronted goose geese migration migrate birds wildlife greater whitefront whitefronted group goose environment hunting freshwater anser albifrons albifrons habitat field oregon species fauna bird flight duck animal nature wild lake winter many water anser snow fronted flying background fly natural grass greater foal white sky