Birdwatching in Polder Westzaan
Historical bird observations from Noord-Holland.
- species with data
- 52
- GBIF counts
- 11,428
- best month
- December
Only bird-location combinations reported in at least 3 calendar months and with at least 5 combined counts are included.
Birds with sufficient data
- 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
- BlackbirdTurdus merula73 GBIF counts
- Grey HeronArdea cinerea31 GBIF counts
- Black ShagPhalacrocorax carbo43 GBIF counts
- Mute SwanCygnus olor65 GBIF counts
- Black-billed MagpiePica pica38 GBIF counts
- COSNGallinago gallinago28 GBIF counts
- Common GallinuleGallinula chloropus15 GBIF counts
- Collared DoveStreptopelia decaocto25 GBIF counts
- GadwallMareca strepera61 GBIF counts
- Common KestrelFalco tinnunculus36 GBIF counts
- BASWHirundo rustica92 GBIF counts
- Tufted DuckAythya fuligula90 GBIF counts
- Egyptian GooseAlopochen aegyptiaca31 GBIF counts
- Barnacle GooseBranta leucopsis82 GBIF counts
- COSHTadorna tadorna29 GBIF counts
- Duck HawkFalco peregrinus22 GBIF counts
- BTGOLimosa limosa58 GBIF counts
- Common PheasantPhasianus colchicus20 GBIF counts
- Pied Wagtail and White WagtailMotacilla alba11 GBIF counts
- EUMHCircus aeruginosus16 GBIF counts
- Canada GooseBranta canadensis21 GBIF counts
- Crested GrebePodiceps cristatus12 GBIF counts
- Eurasian OystercatcherHaematopus ostralegus33 GBIF counts
- Common TernSterna hirundo26 GBIF counts
- SEWAAcrocephalus schoenobaenus15 GBIF counts
- Black-backed GullLarus fuscus11 GBIF counts
- ChiffchaffPhylloscopus collybita6 GBIF counts
- Great EgretArdea alba7 GBIF counts
- COPOAythya ferina9 GBIF counts
- Eurasian SpoonbillPlatalea leucorodia8 GBIF counts
- Continental RobinErithacus rubecula7 GBIF counts
- CORETringa totanus7 GBIF counts
- Eurasian TealAnas crecca25 GBIF counts
- Blue TitCyanistes caeruleus11 GBIF counts
- Eurasian SparrowhawkAccipiter nisus9 GBIF counts
- Eurasian GoldfinchCarduelis carduelis7 GBIF counts
- GRTIParus major12 GBIF counts
- Northern ShovelerSpatula clypeata12 GBIF counts
- Cetti's WarblerCettia cetti8 GBIF counts
- Common Reed BuntingEmberiza schoeniclus7 GBIF counts
Monthly pattern
Monthly totals
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sept
Oct
Nov
Dec
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.