Japan Ramsar wetland
Ōnuma
108 bird species recorded; the most in May.
Ippukucho · CC BY 3.0
This month here
49 species in January.38 species in February.42 species in March.56 species in April.65 species in May.48 species in June.44 species in July.33 species in August.37 species in September.26 species in October.39 species in November.50 species in December.
The birds you are most likely to see in the month you choose, those that come for the season first. It opens on today's month.
- Resident all year
- Summer visitor comes to breed
- Winter visitor comes for the winter
- Passage migrant in spring and autumn
In numbers
108 species, counted.
Our own rating, from the records only: species (50 points), threatened species (20), migrants (20) and protected status — Ramsar, IBA, SPA, observatory (10).
- 108Speciesrecorded more than once
- 51Migrantssummer, winter or passage visitors
- 3ThreatenedVulnerable, Endangered or Critically Endangered (IUCN)
- 1,702Recordsopen records within 6 km
- 128 mAltitudeabove the sea
- 6Raptors
- 1Waders
- 3Gulls & seabirds
- 23Ducks & geese
- 8Herons, ibises & grebes
- 51Songbirds
- 16Other birds
From open records (eBird and others, through GBIF, licensed for any use). More birdwatchers mean more records: a quiet place may have more birds than it shows.
The checklist
All 108 species.
By group, with the year in twelve cells: the darker the cell, the more often the bird is recorded that month.
Raptors6 species
JFMAMJJASOND
- Black KiteMilvus migrans
- White-tailed EagleHaliaeetus albicilla
- Japanese BuzzardButeo japonicus
- OspreyPandion haliaetus
- Steller's Sea-eagleHaliaeetus pelagicusVU
- Eurasian SparrowhawkAccipiter nisus
Waders1 species
JFMAMJJASOND
- Japanese SnipeGallinago hardwickiiNT
Gulls & seabirds3 species
JFMAMJJASOND
- Slaty-backed GullLarus schistisagus
- Black-tailed GullLarus crassirostris
- Vega GullLarus vegae
Ducks & geese23 species
JFMAMJJASOND
- MallardAnas platyrhynchos
- Chinese Spot-billed DuckAnas zonorhyncha
- Whooper SwanCygnus cygnus
- Mandarin DuckAix galericulata
- SmewMergellus albellus
- GoosanderMergus merganser
- Common GoldeneyeBucephala clangula
- Eurasian TealAnas crecca
- Greater White-fronted GooseAnser albifrons
- Northern PintailAnas acuta
- Tufted DuckAythya fuligula
- Bewick's SwanCygnus columbianus
- Taiga Bean GooseAnser fabalis
- Mute SwanCygnus olor
- Eurasian WigeonMareca penelope
- Northern ShovelerSpatula clypeata
- Snow gooseAnser caerulescens
- Common PochardAythya ferinaVU
- Baikal TealSibirionetta formosa
- Falcated DuckMareca falcata
- Cackling GooseBranta hutchinsii
- Ring-necked DuckAythya collaris
- GadwallMareca strepera
Herons, ibises & grebes8 species
JFMAMJJASOND
- Grey HeronArdea cinerea
- Little GrebeTachybaptus ruficollis
- Great Crested GrebePodiceps cristatus
- Great White EgretArdea alba
- Great CormorantPhalacrocorax carbo
- Japanese CormorantPhalacrocorax capillatus
- Eared GrebePodiceps nigricollis
- Horned GrebePodiceps auritusVU
Songbirds51 species
JFMAMJJASOND
- Cinereous TitParus cinereus
- Large-billed CrowCorvus macrorhynchos
- Eurasian NuthatchSitta europaea
- Carrion CrowCorvus corone
- Marsh TitPoecile palustris
- Poecile variusPoecile varius
- Eurasian Tree SparrowPasser montanus
- Brown-eared BulbulHypsipetes amaurotis
- White WagtailMotacilla alba
- Narcissus FlycatcherFicedula narcissina
- Chestnut-cheeked StarlingAgropsar philippensis
- Turdus eunomusTurdus eunomus
- Coal TitPeriparus ater
- Passer cinnamomeusPasser cinnamomeus
- Eurasian JayGarrulus glandarius
- Grey-capped GreenfinchChloris sinica
- Japanese Bush WarblerHorornis diphone
- Masked buntingEmberiza personata
- Eurasian TreecreeperCerthia familiaris
- Eurasian SiskinSpinus spinus
- Janpanese ThrushTurdus cardis
- GoldcrestRegulus regulus
- Barn swallowHirundo rustica
- Willow TitPoecile montanus
- Eurasian WrenTroglodytes troglodytes
- Zosterops japonicusZosterops japonicus
- Japanese WagtailMotacilla grandis
- Bull-headed ShrikeLanius bucephalus
- Asian House MartinDelichon dasypus
- Brown-headed ThrushTurdus chrysolaus
- Eastern Crowned Leaf WarblerPhylloscopus coronatus
- HawfinchCoccothraustes coccothraustes
- Muscicapa latirostrisMuscicapa latirostris
- White-cheeked StarlingSpodiopsar cineraceus
- Long-tailed RosefinchCarpodacus sibiricus
- Chestnut-eared BuntingEmberiza fucata
- Rustic BuntingEmberiza rusticaNT
- Blue-and-white FlycatcherCyanoptila cyanomelana
- SkylarkAlauda arvensis
- Common crossbillLoxia curvirostra
- Japanese WaxwingBombycilla japonicaNT
- Grey WagtailMotacilla cinerea
- Eyebrowed thrushTurdus obscurus
- Yellow-throated BuntingEmberiza elegans
- Meadow BuntingEmberiza cioides
- Siberian Blue RobinLuscinia cyane
- Japanese GrosbeakEophona personata
- BullfinchPyrrhula pyrrhula
- Common RedpollAcanthis flammea
- Oriental Reed WarblerAcrocephalus orientalis
- Daurian JackdawColoeus dauuricus
Other birds16 species
JFMAMJJASOND
- Great Spotted WoodpeckerDendrocopos major
- Japanese Pygmy WoodpeckerYungipicus kizuki
- Oriental Turtle DoveStreptopelia orientalis
- Grey-headed WoodpeckerPicus canus
- Common MoorhenGallinula chloropus
- Black WoodpeckerDryocopus martius
- Rock DoveColumba livia
- Common KingfisherAlcedo atthis
- White-backed WoodpeckerDendrocopos leucotos
- CootFulica atra
- Oriental CuckooCuculus optatus
- Common CuckooCuculus canorus
- White-bellied Green-PigeonTreron sieboldii
- Pacific SwiftApus pacificus
- Lesser CuckooCuculus poliocephalus
- Lesser Spotted WoodpeckerDryobates minor
Monthly presence relative to all bird records that month, so a busy month does not inflate every species.
When to go
The most species in May.
Species recorded in each month, with the usual temperature and rain.
- Jan-1°/-4°82 mm
- Feb0°/-4°69 mm
- Mar3°/-2°68 mm
- Apr9°/2°74 mm
- May14°/7°85 mm
- Jun19°/12°85 mm
- Jul22°/16°129 mm
- Aug24°/19°151 mm
- Sep21°/16°130 mm
- Oct15°/10°105 mm
- Nov8°/3°116 mm
- Dec2°/-2°107 mm
- Bar: species recorded that month.
- Temperature: average maximum / minimum (NASA, 1991–2020).
- Rain: monthly total.
The place
Ōnuma.
Lake in Japan, Hokkaido, Oshima Subprefecture
Ōnuma is a wetland of international importance (Ramsar) in Japan.
108 bird species have been recorded here more than once, in 1,702 open records.
The most recorded are the Mallard, the Black Kite and the Chinese Spot-billed Duck.
27 species come for the summer, 24 for the winter and 0 only pass through.
3 are threatened worldwide, including Common Pochard, Steller's Sea-eagle and Horned Grebe.
The most species are recorded in May.
Get there and watch
- YUKARA AUTO CAMPcampsite · 2.1 km · 4 within 10 km
- 民宿 ゆっくり大沼place to stay · 1.7 km · 4 within 10 km
- Honchōnearest town · 12 km in a straight line
- Hakodate Airport (HKD)nearest airport with scheduled flights · 28 km in a straight lineCar hire at CTS airport (Sapporo)Discover Cars · sponsored link↗
Plan the visit
A guided walk, a bed nearby, a car.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
From above
The place and its surroundings.
The satellite image of the 6 × 6 km around the place, with the bird hides, towers and trails that OpenStreetMap shows.
Around, in OpenStreetMap
- 1visitor centres within 6 km大沼国際交流プラザ
- 3viewpoints within 5 km日暮山展望台, Swan viewpoint
- 13car parks within 3 km
- 5restaurants and cafés within 3 km
- 4campsites within 10 kmYUKARA AUTO CAMP, 東大沼キャンプ場, 遊食広場ニヤマオートキャンプ場 and 1 more
- 4places to stay within 10 km民宿 ゆっくり大沼, ステーションホテル旭屋, 函館大沼鶴雅リゾートエプイ and 1 more
- bird hides within 6 km
- observation towers within 6 km
- marked trails within 4 km
Counted in OpenStreetMap, the map anyone can edit. A low number may just mean nobody has mapped it yet.
In our other atlases
Around Ōnuma.
The lakes, beaches, islands, rivers and mountains around this place, and its night sky, in the family's atlases.
Peakyas19 mountains within 25 kmMount Binbo501 m · 5.2 kmHokkaidō Koma-ga-take1,131 m · volcano · 7.4 kmMount Nanae779 m · 9.4 kmMount Yokotsu1,167 m · volcano · 9.8 kmMount Hakamagoshi1,108 m · 13 kmShōji-yama · 14 kmMount Nakitsura835 m · volcano · 17 kmNigorikawa · 25 km
Lakeyas2 lakes within 15 kmŌnuma9.1 km² · 3.2 kmJunsai-numa0.6 km² · 4.6 km
Figures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, OpenStreetMap). Links open when each site is online.
Photographs
The place, as people saw it.
Other places nearby.
Ōnuma
Japan
- 57Birdyas Score
- 108Species
- 51Migrants
- 3Threatened
Where these figures come from
| Name and type | Wikidata (Q10936312) · CC0 |
|---|---|
| Birds | 1,702 open bird records within 6 km (GBIF, CC0 and CC BY 4.0 only; mostly eBird, Cornell Lab of Ornithology) |
| See these records | gbif.org |
| Species | GBIF Backbone Taxonomy · CC BY 4.0; Wikidata (CC0); Wikimedia Commons |
| Altitude | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Temperature and rain | NASA POWER (CERES SYN1deg, 2001–2020; MERRA-2) |
| What is around | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Sister atlases | Peakyas, Islandyas, Lakeyas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?
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