mute swan (cygnus olor) drinking water from a lake in pacsmag

allwhite animal appearance aquatic asia beak bill bird black bonds calls complex courtship curved cygnus distinctive drinking duck ducks easily elegant europe feeds fish found freshwater goose graceful identified invertebrates knob lake lakes large lifelong long mallard marshes monochrome mute native neck notable occasionally olor orange pacsmag pair plumage posture presence prominent reflection rituals rivers robust small soft striking strong swan swans swimming typically vegetation water waterbird waterfowl white wing