Finland Ramsar wetland
Olvassuo Strict Nature Reserve
81 bird species recorded; the most in June.
SeppVei · Public domain
This month here
0 species in January.0 species in February.0 species in March.0 species in April.14 species in May.71 species in June.55 species in July.6 species in August.0 species in September.1 species in October.0 species in November.0 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.
No records for this month.
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- Resident all year
- Summer visitor comes to breed
- Winter visitor comes for the winter
- Passage migrant in spring and autumn
In numbers
81 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).
- 81Speciesrecorded more than once
- 17Migrantssummer, winter or passage visitors
- 1ThreatenedVulnerable, Endangered or Critically Endangered (IUCN)
- 1,738Recordsopen records within 6 km
- 139 mAltitudeabove the sea
- 5Raptors
- 12Waders
- 3Gulls & seabirds
- 5Ducks & geese
- 1Storks & cranes
- 44Songbirds
- 11Other 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 81 species.
By group, with the year in twelve cells: the darker the cell, the more often the bird is recorded that month.
Raptors5 species
- European HobbyFalco subbuteo
- Common KestrelFalco tinnunculus
- European Honey-buzzardPernis apivorus
- Common BuzzardButeo buteo
- MerlinFalco columbarius
Waders12 species
- Common GreenshankTringa nebularia
- Wood SandpiperTringa glareola
- Common SnipeGallinago gallinago
- Eurasian WhimbrelNumenius phaeopus
- Eurasian CurlewNumenius arquataNT
- European Golden PloverPluvialis apricaria
- Northern LapwingVanellus vanellusNT
- Green SandpiperTringa ochropus
- Jack SnipeLymnocryptes minimus
- Spotted RedshankTringa erythropus
- RuffCalidris pugnax
- Broad-billed SandpiperCalidris falcinellusVU
Gulls & seabirds3 species
- Black-throated DiverGavia arctica
- Common GullLarus canus
- European Herring GullLarus argentatus
Ducks & geese5 species
- Eurasian TealAnas crecca
- Whooper SwanCygnus cygnus
- MallardAnas platyrhynchos
- Common GoldeneyeBucephala clangula
- Taiga Bean GooseAnser fabalis
Storks & cranes1 species
- Common CraneGrus grus
Songbirds44 species
- Eurasian ChaffinchFringilla coelebs
- Tree PipitAnthus trivialis
- Willow WarblerPhylloscopus trochilus
- Common RedstartPhoenicurus phoenicurus
- BramblingFringilla montifringilla
- Eurasian SiskinSpinus spinus
- Spotted FlycatcherMuscicapa striata
- Willow TitPoecile montanus
- Meadow PipitAnthus pratensis
- Song ThrushTurdus philomelos
- Western Yellow WagtailMotacilla flava
- European RobinErithacus rubecula
- Mistle ThrushTurdus viscivorus
- European Pied FlycatcherFicedula hypoleuca
- Great titParus major
- RedwingTurdus iliacus
- Rustic BuntingEmberiza rusticaNT
- BullfinchPyrrhula pyrrhula
- Northern RavenCorvus corax
- Common crossbillLoxia curvirostra
- Common Reed BuntingEmberiza schoeniclus
- Common RedpollAcanthis flammea
- Eurasian TreecreeperCerthia familiaris
- Hooded CrowCorvus cornix
- GoldcrestRegulus regulus
- European Crested TitLophophanes cristatus
- White WagtailMotacilla alba
- Bohemian WaxwingBombycilla garrulus
- WhinchatSaxicola rubetra
- FieldfareTurdus pilaris
- Common ChiffchaffPhylloscopus collybita
- Lesser whitethroatSylvia curruca
- Parrot CrossbillLoxia pytyopsittacus
- Wood WarblerPhylloscopus sibillatrix
- Barn swallowHirundo rustica
- Siberian JayPerisoreus infaustus
- Garden WarblerSylvia borin
- Common RosefinchCarpodacus erythrinus
- DunnockPrunella modularis
- Carrion CrowCorvus corone
- Northern WheatearOenanthe oenanthe
- Eurasian WrenTroglodytes troglodytes
- European GreenfinchChloris chloris
- Lanius excubitorLanius excubitor
Other birds11 species
- Common CuckooCuculus canorus
- Great Spotted WoodpeckerDendrocopos major
- European SwiftApus apus
- Black GrouseLyrurus tetrix
- Eurasian Three-toed WoodpeckerPicoides tridactylus
- Western CapercaillieTetrao urogallus
- Black WoodpeckerDryocopus martius
- Hazel GrouseTetrastes bonasia
- WryneckJynx torquilla
- Willow PtarmiganLagopus lagopus
- Common Wood PigeonColumba palumbus
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 June.
Species recorded in each month, with the usual temperature and rain.
- Jan-9°/-15°56 mm
- Feb-8°/-14°44 mm
- Mar-3°/-10°50 mm
- Apr2°/-4°49 mm
- May12°/3°81 mm
- Jun17°/8°82 mm
- Jul20°/12°103 mm
- Aug18°/10°94 mm
- Sep12°/5°89 mm
- Oct4°/-1°76 mm
- Nov-2°/-6°71 mm
- Dec-6°/-12°67 mm
- Bar: species recorded that month.
- Temperature: average maximum / minimum (NASA, 1991–2020).
- Rain: monthly total.
The place
Olvassuo Strict Nature Reserve.
Protected area in Finland
Olvassuo Strict Nature Reserve is a wetland of international importance (Ramsar) in Finland.
81 bird species have been recorded here more than once, in 1,738 open records.
The most recorded are the Eurasian Chaffinch, the Tree Pipit and the Willow Warbler.
17 species come for the summer, 0 for the winter and 0 only pass through.
1 are threatened worldwide, including Broad-billed Sandpiper.
The most species are recorded in June.

Get there and watch
- Oulu Airport (OUL)nearest airport with scheduled flights · 92 km in a straight lineCar hire at OUL airport (Oulu / Oulunsalo)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
- 1bird hides within 6 kmLintutorni
- 1observation towers within 6 kmLintutorni
- marked trails within 4 km
- visitor centres within 6 km
- viewpoints within 5 km
- car parks within 3 km
- restaurants and cafés within 3 km
- campsites within 10 km
- places to stay within 10 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 Olvassuo Strict Nature Reserve.
The lakes, beaches, islands, rivers and mountains around this place, and its night sky, in the family's atlases.
Figures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, OpenStreetMap). Links open when each site is online.
Photographs
The place, as people saw it.

Where these figures come from
| Name and type | Wikidata (Q11885496) · CC0 |
|---|---|
| Birds | 1,738 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, 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?
Same idea, other landscapes: field atlases built on open data, in seven languages.



