COPO at Polder Westzaan
Aythya ferina · Noord-Holland
- counts at this location
- 9
- best month
- April
- period
- 2012-2023
Only bird-location combinations reported in at least 3 calendar months and with at least 5 combined counts are included.
Monthly pattern
Monthly totals
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sept
Oct
Nov
Dec
Other locations for this bird
- VeluwerandmerenFlevoland2,153,581 GBIF counts
- OostvaardersplassenFlevoland504,348 GBIF counts
- GrevelingenZeeland141,418 GBIF counts
- Markermeer & IJmeerNoord-Holland128,221 GBIF counts
- Kennemerland-ZuidNoord-Holland123,104 GBIF counts
- OosterscheldeZeeland120,321 GBIF counts
- IJsselmeerFriesland108,893 GBIF counts
- NoordzeekustzoneNoord-Holland70,688 GBIF counts
- BiesboschNoord-Brabant53,763 GBIF counts
- WaddenzeeFriesland42,040 GBIF counts
- Noordhollands DuinreservaatNoord-Holland34,997 GBIF counts
- LauwersmeerGroningen32,630 GBIF counts
Other birds at this location
- Domesticated GeeseAnser anser6,358 GBIF counts
- Black CootFulica atra1,112 GBIF counts
- MallardAnas platyrhynchos520 GBIF counts
- COSTSturnus vulgaris747 GBIF counts
- Black-headed GullChroicocephalus ridibundus438 GBIF counts
- BuzzardButeo buteo71 GBIF counts
- Common House SparrowPasser domesticus146 GBIF counts
- European Herring GullLarus argentatus236 GBIF counts
- Carrion CrowCorvus corone217 GBIF counts
- Green PloverVanellus vanellus190 GBIF counts
- Common Wood PigeonColumba palumbus139 GBIF counts
- Common JackdawColoeus monedula135 GBIF counts
Data source
Counts are aggregated from open observation data supplied through GBIF. They indicate historical reporting patterns, not guaranteed current presence. Last processed: 28 July 2026.