the mute swan cygnus olor is a species of swan and a member of the waterfowl family anatidae, biebrzanski national park, poland.

adult anatidae and animal biebrza biebrzanski bird birds blue calm calmness cygnus eastern family habitat habitats lake loch male member mute national natural nature olor park podlasie podlaskie poland reflection river romantic scenery single species spring swan swans swim swimming tranquil tranquility view waterfowl white