United Kingdom Ramsar wetland
Crymlyn Bog
167 bird species recorded; the most in January.
Tiia Monto · CC BY-SA 3.0
This month here
132 species in January.88 species in February.80 species in March.97 species in April.102 species in May.86 species in June.86 species in July.89 species in August.97 species in September.81 species in October.81 species in November.89 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.
NT
VU
NT
NT
NT
NT
NTNT
NT
NTVU- Resident all year
- Summer visitor comes to breed
- Winter visitor comes for the winter
- Passage migrant in spring and autumn
In numbers
167 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).
- 167Speciesrecorded more than once
- 55Migrantssummer, winter or passage visitors
- 5ThreatenedVulnerable, Endangered or Critically Endangered (IUCN)
- 11,303Recordsopen records within 6 km
- 9Raptors
- 5Owls
- 21Waders
- 17Gulls & seabirds
- 21Ducks & geese
- 9Herons, ibises & grebes
- 69Songbirds
- 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 167 species.
By group, with the year in twelve cells: the darker the cell, the more often the bird is recorded that month.
Raptors9 species
JFMAMJJASOND
- Common BuzzardButeo buteo
- Red KiteMilvus milvus
- Common KestrelFalco tinnunculus
- Eurasian SparrowhawkAccipiter nisus
- Peregrine FalconFalco peregrinus
- Western Marsh HarrierCircus aeruginosus
- MerlinFalco columbarius
- Hen HarrierCircus cyaneus
- Red-footed FalconFalco vespertinusVU
Owls5 species
JFMAMJJASOND
- Tawny OwlStrix aluco
- Western Barn OwlTyto alba
- Little OwlAthene noctua
- Northern Eagle OwlBubo bubo
- Short-eared OwlAsio flammeus
Waders21 species
JFMAMJJASOND
- Northern LapwingVanellus vanellusNT
- Eurasian OystercatcherHaematopus ostralegusNT
- DunlinCalidris alpinaNT
- Eurasian CurlewNumenius arquataNT
- Common Ringed PloverCharadrius hiaticula
- Ruddy TurnstoneArenaria interpresNT
- RedshankTringa totanus
- Eurasian WhimbrelNumenius phaeopus
- SanderlingCalidris alba
- Common SnipeGallinago gallinago
- Common SandpiperActitis hypoleucos
- Bar-tailed godwitLimosa lapponicaNT
- European Golden PloverPluvialis apricaria
- Black-tailed GodwitLimosa limosaNT
- Sociable PloverVanellus gregariusCR
- Grey PloverPluvialis squatarolaVU
- Eurasian WoodcockScolopax rusticola
- Common GreenshankTringa nebularia
- Green SandpiperTringa ochropus
- Red KnotCalidris canutusNT
- Little ringed ploverCharadrius dubius
Gulls & seabirds17 species
JFMAMJJASOND
- European Herring GullLarus argentatus
- Mediterranean GullIchthyaetus melanocephalus
- Lesser Black-backed GullLarus fuscus
- Black-headed GullChroicocephalus ridibundus
- Great Black-backed GullLarus marinus
- Common GullLarus canus
- Black-legged kittiwakeRissa tridactylaVU
- Little GullHydrocoloeus minutus
- Northern gannetMorus bassanus
- Manx ShearwaterPuffinus puffinus
- Ross's GullRhodostethia rosea
- Sandwich TernThalasseus sandvicensis
- Common TernSterna hirundo
- Arctic SkuaStercorarius parasiticus
- Common LoonGavia immer
- Roseate TernSterna dougallii
- Little TernSternula albifrons
Ducks & geese21 species
JFMAMJJASOND
- Canada GooseBranta canadensis
- MallardAnas platyrhynchos
- Mute SwanCygnus olor
- Tufted DuckAythya fuligula
- GoosanderMergus merganser
- Eurasian TealAnas crecca
- Common PochardAythya ferinaVU
- Eurasian WigeonMareca penelope
- Greylag GooseAnser anser
- Common ShelduckTadorna tadorna
- Cairina moschataCairina moschata
- GadwallMareca strepera
- Greater White-fronted GooseAnser albifrons
- Common EiderSomateria mollissimaNT
- Swan GooseAnser cygnoides
- Northern PintailAnas acuta
- Surf ScoterMelanitta perspicillata
- Common GoldeneyeBucephala clangula
- Barnacle GooseBranta leucopsis
- Northern ShovelerSpatula clypeata
- GarganeySpatula querquedula
Herons, ibises & grebes9 species
JFMAMJJASOND
- Great CormorantPhalacrocorax carbo
- Grey HeronArdea cinerea
- Little EgretEgretta garzetta
- Little GrebeTachybaptus ruficollis
- Great Crested GrebePodiceps cristatus
- Eurasian BitternBotaurus stellaris
- ShagPhalacrocorax aristotelis
- Great White EgretArdea alba
- Glossy IbisPlegadis falcinellus
Songbirds69 species
JFMAMJJASOND
- Eurasian MagpiePica pica
- Eurasian BlackbirdTurdus merula
- Carrion CrowCorvus corone
- European RobinErithacus rubecula
- Eurasian Blue TitCyanistes caeruleus
- Western JackdawColoeus monedula
- House SparrowPasser domesticus
- European GoldfinchCarduelis carduelis
- Eurasian WrenTroglodytes troglodytes
- Common StarlingSturnus vulgaris
- Great titParus major
- White WagtailMotacilla alba
- DunnockPrunella modularis
- Eurasian ChaffinchFringilla coelebs
- European StonechatSaxicola rubicola
- Barn swallowHirundo rustica
- Common ChiffchaffPhylloscopus collybita
- Song ThrushTurdus philomelos
- GoldcrestRegulus regulus
- Coal TitPeriparus ater
- Eurasian JayGarrulus glandarius
- BlackcapSylvia atricapilla
- Common LinnetLinaria cannabina
- Mistle ThrushTurdus viscivorus
- BullfinchPyrrhula pyrrhula
- Northern RavenCorvus corax
- Meadow PipitAnthus pratensis
- SkylarkAlauda arvensis
- European GreenfinchChloris chloris
- Magnolia WarblerSetophaga magnolia
- Grey WagtailMotacilla cinerea
- Willow WarblerPhylloscopus trochilus
- WhitethroatSylvia communis
- Eurasian TreecreeperCerthia familiaris
- Common Reed BuntingEmberiza schoeniclus
- Eurasian NuthatchSitta europaea
- Common House MartinDelichon urbicum
- Eurasian Reed WarblerAcrocephalus scirpaceus
- Cetti's WarblerCettia cetti
- Eurasian SiskinSpinus spinus
- RookCorvus frugilegus
- Sedge WarblerAcrocephalus schoenobaenus
- European Rock PipitAnthus petrosus
- Sand MartinRiparia riparia
- Northern WheatearOenanthe oenanthe
- White-throated DipperCinclus cinclus
- YellowhammerEmberiza citrinella
- Garden WarblerSylvia borin
- Spotted FlycatcherMuscicapa striata
- RedwingTurdus iliacus
- Tree PipitAnthus trivialis
- Common Grasshopper WarblerLocustella naevia
- Wood WarblerPhylloscopus sibillatrix
- Lesser whitethroatSylvia curruca
- Willow TitPoecile montanus
- Common RedpollAcanthis flammea
- FieldfareTurdus pilaris
- European Pied FlycatcherFicedula hypoleuca
- Marsh TitPoecile palustris
- Bearded ReedlingPanurus biarmicus
- Black RedstartPhoenicurus ochruros
- WhinchatSaxicola rubetra
- Eurasian Tree SparrowPasser montanus
- Common RedstartPhoenicurus phoenicurus
- Common FirecrestRegulus ignicapilla
- Common crossbillLoxia curvirostra
- BramblingFringilla montifringilla
- Western Yellow WagtailMotacilla flava
- Bohemian WaxwingBombycilla garrulus
Other birds16 species
JFMAMJJASOND
- Common Wood PigeonColumba palumbus
- Rock DoveColumba livia
- European SwiftApus apus
- Common MoorhenGallinula chloropus
- CootFulica atra
- Eurasian Collared DoveStreptopelia decaocto
- Great Spotted WoodpeckerDendrocopos major
- Green WoodpeckerPicus viridis
- Common CuckooCuculus canorus
- Common KingfisherAlcedo atthis
- Rose-ringed ParakeetPsittacula krameri
- Eurasian HoopoeUpupa epops
- European Water RailRallus aquaticus
- Stock DoveColumba oenas
- Common PheasantPhasianus colchicus
- 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 January.
Species recorded in each month, with the usual temperature and rain.
- Jan8°/4°112 mm
- Feb8°/4°86 mm
- Mar9°/4°80 mm
- Apr12°/6°60 mm
- May15°/9°71 mm
- Jun17°/12°77 mm
- Jul19°/14°87 mm
- Aug19°/14°94 mm
- Sep17°/12°75 mm
- Oct14°/10°115 mm
- Nov11°/8°121 mm
- Dec8°/5°125 mm
- Bar: species recorded that month.
- Temperature: average maximum / minimum (NASA, 1991–2020).
- Rain: monthly total.
The place
Crymlyn Bog.
Site of Special Scientific Interest in Wales
Crymlyn Bog is a wetland of international importance (Ramsar) in United Kingdom.
167 bird species have been recorded here more than once, in 11,303 open records.
The most recorded are the Canada Goose, the Eurasian Magpie and the Common Wood Pigeon.
31 species come for the summer, 24 for the winter and 0 only pass through.
5 are threatened worldwide, including Common Pochard, Black-legged kittiwake and Sociable Plover.
The most species are recorded in January.
Get there and watch
- Riverside Caravan Parkcampsite · 4.6 km · 4 within 10 km
- The Villageplace to stay · 2.9 km · 42 within 10 km
- Swanseanearest town · 4.2 km in a straight line
- Cardiff International Airport (CWL)nearest airport with scheduled flights · 46 km in a straight lineCar hire at CWL airport (Cardiff)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
- 2marked trails within 4 kmWales Coast Path (South Wales)
- 1visitor centres within 6 kmSwansea City Bus Station
- 2viewpoints within 5 km
- 101car parks within 3 km
- 20restaurants and cafés within 3 km
- 4campsites within 10 kmRiverside Caravan Park, Glyn Y Mul Farm and 2 more
- 42places to stay within 10 kmThe Village, Holiday Inn, Grand Hotel and 39 more
- bird hides within 6 km
- observation towers within 6 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 Crymlyn Bog.
The lakes, beaches, islands, rivers and mountains around this place, and its night sky, in the family's atlases.
Peakyas154 mountains within 25 kmMynydd Caerau555 m · 20 kmMynydd Llangeinwyr568 m · 22 kmWerfa568 m · 22 kmTwyn Crugyrafan [Graig Fawr]559 m · 23 kmCraig y Llyn600 m · 23 kmCraig y Llyn (boundary)590 m · 23 kmGarreg Lwyd616 m · 24 kmFoel Fraith602 m · 24 km
Lakeyas1 lakes within 15 kmEglwys Nunydd1.0 km² · 14 km
Darkskyas1 dark-sky places within 30 kmMarina Towers ObservatoryBortle 6 · 4.2 km
Cavernyas1 caves within 20 kmCathole Cave · 16 km
Cascadyas2 waterfalls within 15 kmAberdulais Falls · 9.1 kmMelincourt Falls · 15 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.
Crymlyn Bog
United Kingdom
- 65Birdyas Score
- 167Species
- 55Migrants
- 5Threatened
Where these figures come from
| Name and type | Wikidata (Q5190490) · CC0 |
|---|---|
| Birds | 11,303 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, Darkskyas, Cavernyas, Cascadyas |
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.
beaches
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rivers
Every river from source to sea: the journey, the flow and the basin in numbers.Visit 
canyons
Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit caves
Every cave with its real depth and length: the rock above, the temperature inside all year, and how to visit.Visit dark skies
Where the night is still dark: the sky of every place, the Milky Way month by month, the Moon, eclipses and auroras.Visit 
viewpoints
Every viewpoint with its real 360° panorama: the peaks you can name, how far you see and where the sun sets.Coming soonVisit 
birdwatching
Every bird sanctuary and wetland with the species recorded month by month: who is resident, who comes for the summer, who only passes through.You are here
forests
Every forest with its land-cover rings, what grows and lives in it, and the best months to walk it.Coming soonVisit