pair of swan geese

anatidae anser anseriformes anserinae anserini asia asian aves beak beauty bird birds china colorful cygnoides domesticus eye fauna feathering feathers galloanseres geese goose grass green head lake large looking migratory mongolia natural nature neognathae neornithes ornithology outdoors pair plumage pond portrait rare russia swan theme two vertical watching water waterfowl wild wildlife zoology