Most observations
  1. White-tailed Eagle
  2. Mute Swan
  3. Mallard
  4. European Herring Gull
  5. Great Cormorant
  6. Black-headed Gull
  7. Common Merganser
  8. Greylag Goose
  9. Red-breasted Merganser
  10. Common Crane
Most individuals
  1. Greater Scaup
  2. Common Scoter
  3. Barnacle Goose
  4. Great Cormorant
  5. Eurasian Teal
  6. Long-tailed Duck
  7. Smew
  8. Common Goldeneye
  9. Eurasian Wigeon
  10. Mute Swan