Wetland Birds of Europe: Ducks, Herons, Waders, and Waterbirds

Europe’s wetland birds include far more than ducks on lakes and herons at the water’s edge. The group extends across swans, geese, grebes, loons, cormorants, pelicans, rails, flamingos, shorebirds, gulls and terns whose annual cycles depend on open water, reedbeds, floodplains, wet grassland, mudflats, lagoons or shallow coastal bays. They do not form one branch of bird taxonomy. Their shared feature is ecological dependence on water and wet ground.

A European wetland may hold breeding birds, locally resident birds, Arctic migrants stopping to refuel and wintering populations that originated well outside Europe. The species present can therefore change sharply with water depth, salinity, vegetation, freezing conditions, rainfall, tidal stage and season. A drained meadow, a flooded river margin and an exposed estuarine mudflat may be separated by only a few kilometres yet support very different bird communities.

Scope of the European Working Checklist

The checklist on this page contains 143 wetland-dependent species that occur regularly, locally, seasonally or as conservation-relevant historical species within the broad European assessment area. It excludes most purely oceanic seabirds, wetland-associated songbirds and exceptional transatlantic or trans-Asian vagrants. It is a bounded reference list, not a claim that every listed species occurs in every European country.

Wetland Bird, Waterbird, Wader and Wading Bird

Wetland bird is an ecological expression. It can apply to any bird that depends on wetlands for feeding, breeding, moulting, resting or migration. A species may qualify even when it spends part of the year on farmland, tundra, coastal cliffs or open sea.

Waterbird is also broad. The African-Eurasian Migratory Waterbird Agreement covers hundreds of wetland-dependent species from divers and grebes to ducks, rails, herons, storks, flamingos, shorebirds, gulls and terns. This range shows why “waterbird” cannot be treated as a synonym for duck. AEWA species coverage

In European ornithological usage, wader usually refers to shorebird families such as plovers, sandpipers, godwits, curlews, snipes, stilts and avocets. The everyday phrase wading bird may also describe long-legged herons, storks, ibises and spoonbills. A Grey Heron is a bird that wades, but it is not a wader in the narrower shorebird sense.

Taxonomy and English Names Used on This Page

Scientific and primary English names follow AviList v2025b. This matters because field guides, monitoring programmes and global checklists do not always use the same English name. Anas crecca, for example, appears as Green-winged Teal in AviList but remains widely called Common Teal in European monitoring. Mergus merganser is Common Merganser in the global list and Goosander in much European usage. Ardea alba is Great Egret in AviList and Great White Egret in several European reports.

A name difference does not necessarily indicate a different species. The scientific name should be checked before records from field guides, monitoring portals and conservation assessments are combined.

Water Depth, Substrate and Vegetation Divide the Bird Community

The distribution of birds within one wetland is often structured more strongly by a few centimetres of water than by the total size of the site. Dabbling ducks need water shallow enough to reach submerged food. Diving ducks need sufficient depth and open surface for repeated dives. Small sandpipers use exposed or barely flooded sediment, while godwits and curlews can probe farther below the surface. Bitterns require dense emergent vegetation, whereas pelicans and cormorants need open areas where fish can be pursued or concentrated.

Wetland setting	Physical features	Bird groups commonly associated with it	Change that can remove feeding or breeding value
Deep lakes and reservoirs	Open water, fish and benthic prey below the surface	Diving ducks, grebes, loons, cormorants and pelicans	Loss of fish, poor water clarity, shoreline disturbance or prolonged freezing
Shallow freshwater marsh	Submerged plants, aquatic invertebrates and patchy open water	Dabbling ducks, coots, moorhens, spoonbills and small herons	Rapid drainage, uniformly deep water or dense vegetation covering all open pools
Reedbed	Emergent reeds, narrow channels and concealed margins	Bitterns, Purple Herons, rails, crakes and nesting grebes	Cutting during the breeding season, drying, burning or loss of shallow feeding edges
Floodplain and wet meadow	Temporary flooding, soft soil, short vegetation and shallow pools	Geese, swans, lapwings, godwits, snipes, cranes and grazing ducks	River confinement, early mowing, permanent drainage or conversion to intensive crops
Estuary and tidal mudflat	Alternating exposed sediment and tidal water rich in invertebrates	Oystercatchers, plovers, knots, dunlins, godwits, curlews and shelducks	Coastal construction, sediment change, shellfish depletion or loss of high-tide roosts
Saltpan and coastal lagoon	Shallow saline water, islands, brine invertebrates and exposed banks	Flamingos, avocets, stilts, Kentish Plovers, gulls and terns	Abandonment of water management, excessive flooding, drying or disturbance of nesting islands
Sheltered coast and marine bay	Shallow coastal water, eelgrass, shellfish beds and fish	Sea ducks, mergansers, loons, grebes and cormorants	Oil contamination, fishing bycatch, shellfish loss or repeated boat disturbance
Fishpond, rice field and managed basin	Artificial water levels with seasonally exposed feeding surfaces	Herons, ibises, spoonbills, ducks and passage waders	Sudden water-level changes, netting, poisoning, disturbance or complete removal of shallow margins

Ducks, Geese and Swans: Grazers, Filter Feeders and Divers

Anatidae occupy nearly every part of the wetland gradient. Swans reach submerged plants with long necks. Geese often feed away from open water on saltmarshes, floodplains or agricultural grassland but return to water for safety and roosting. Dabbling ducks feed at the surface or tip forward in shallow water. Pochards, scaup, eiders, scoters, goldeneyes and mergansers dive for plants, molluscs, crustaceans or fish.

Dabbling and Diving Are Feeding Strategies, Not Simple Habitat Labels

Dabbling ducks are often associated with shallow marshes, but they may rest on deep reservoirs and move into flooded fields at night. Diving ducks can occur on small ponds when depth and prey are suitable. Sea ducks regularly enter estuaries and sheltered lagoons. The same species may therefore use several wetland types in one day.

Common name	Scientific name	Main feeding or wetland association	Broad European pattern
Mute Swan	Cygnus olor	Submerged vegetation in lakes, rivers and sheltered coasts	Widespread resident and partial migrant
Tundra Swan	Cygnus columbianus	Shallow water, flooded grassland and arable feeding areas	Arctic breeder; Bewick’s Swan populations winter in western, central and south-eastern Europe
Whooper Swan	Cygnus cygnus	Lakes, floodplains, marshes and wet farmland	Northern breeder and widespread winter visitor
Taiga Bean Goose	Anser fabalis	Wet grassland, bog margins and farmland near secure roosts	Localized northern and central European wintering populations
Tundra Bean Goose	Anser serrirostris	Floodplains, fields and shallow lakes	Regular migrant and winter visitor, especially in northern, central and eastern Europe
Pink-footed Goose	Anser brachyrhynchus	Coastal marshes, wet grassland and farmland	Concentrated in north-western Europe during migration and winter
Greater White-fronted Goose	Anser albifrons	Floodplains, grassland and shallow-water roosts	Widespread winter visitor from Arctic breeding grounds
Lesser White-fronted Goose	Anser erythropus	Natural grassland, steppe wetlands and shallow lakes	Scarce migrant with fragmented European routes and wintering areas
Greylag Goose	Anser anser	Reed-fringed lakes, marshes, floodplains and grassland	Resident, breeding and migratory populations across much of Europe
Red-breasted Goose	Branta ruficollis	Coastal lakes, steppe wetlands and nearby feeding fields	Concentrated around the Black Sea and south-eastern Europe in winter
Barnacle Goose	Branta leucopsis	Saltmarshes, coastal grassland and shallow roosts	Arctic and Baltic breeder with large north-western wintering flocks
Brant Goose	Branta bernicla	Eelgrass beds, intertidal vegetation and saltmarsh	Atlantic and North Sea coastal winter visitor
Egyptian Goose	Alopochen aegyptiaca	Urban lakes, rivers, reservoirs and grazed banks	Introduced and established in parts of western and central Europe
Ruddy Shelduck	Tadorna ferruginea	Saline lakes, river basins and open wetland margins	Localized natural populations in the east and south-east; feral populations elsewhere
Common Shelduck	Tadorna tadorna	Estuaries, mudflats, saltmarshes and saline inland waters	Common around many western and southern coasts, with inland populations in the east
Mandarin Duck	Aix galericulata	Wooded ponds, slow rivers and lakes with tree cavities	Introduced and established in several western and central European regions
Garganey	Spatula querquedula	Shallow vegetated marshes and flooded meadows	Summer breeder and long-distance migrant; largely absent in winter
Northern Shoveler	Spatula clypeata	Surface filtering in shallow, plankton-rich water	Breeder, passage migrant and winter visitor
Gadwall	Mareca strepera	Shallow lakes and marshes rich in aquatic plants	Widespread but uneven breeder and wintering species
Eurasian Wigeon	Mareca penelope	Grazing on wet grassland, saltmarsh and aquatic vegetation	Northern breeder with large western and southern wintering populations
Mallard	Anas platyrhynchos	Highly flexible surface feeder in natural and artificial wetlands	Widespread resident, breeder and migrant
Northern Pintail	Anas acuta	Shallow marshes, floodplains, lagoons and estuaries	Passage migrant and winter visitor, with localized breeding
Green-winged Teal	Anas crecca	Very shallow water, wet mud and small seeds	Widespread migrant and winter visitor; commonly called Common Teal in Europe
Marbled Duck	Marmaronetta angustirostris	Shallow Mediterranean marshes with emergent vegetation	Localized in southern Europe and the Mediterranean basin
Red-crested Pochard	Netta rufina	Plant-rich lakes, lagoons and reservoirs	Localized breeder and winter visitor, strongest in southern and central regions
Common Pochard	Aythya ferina	Diving for plant material and benthic invertebrates	Broad breeding and wintering range, with marked regional changes
Ferruginous Duck	Aythya nyroca	Shallow, densely vegetated freshwater wetlands	Localized breeder and migrant in central, eastern and southern Europe
Tufted Duck	Aythya fuligula	Diving in lakes, reservoirs, gravel pits and sheltered coasts	Widespread breeder, migrant and winter visitor
Greater Scaup	Aythya marila	Diving for molluscs and other benthic prey	Northern breeder and winter visitor to coasts and large inland waters
Common Eider	Somateria mollissima	Marine molluscs in shallow coastal water	Resident and migratory around northern and north-western coasts
King Eider	Somateria spectabilis	Marine benthic prey	Arctic species occurring regularly only in the far north and sparingly farther south
Harlequin Duck	Histrionicus histrionicus	Fast rivers when breeding and rocky coasts in winter	Regular in Iceland; scarce elsewhere in Europe
Long-tailed Duck	Clangula hyemalis	Deep diving for molluscs and crustaceans	Arctic breeder with major Baltic and northern coastal wintering areas
Common Scoter	Melanitta nigra	Shellfish and other benthic prey in coastal water	Northern breeder; large marine wintering flocks
Velvet Scoter	Melanitta fusca	Diving over shellfish beds and shallow marine substrate	Northern and eastern breeder; Baltic and coastal winter visitor
Common Goldeneye	Bucephala clangula	Diving for aquatic invertebrates and small fish	Northern breeder and widespread winter visitor
Barrow’s Goldeneye	Bucephala islandica	Freshwater and coastal diving	Regular but localized in Iceland; rare elsewhere
Smew	Mergellus albellus	Small fish and aquatic invertebrates in open freshwater	Boreal breeder and winter visitor to central, western and south-eastern Europe
Common Merganser	Mergus merganser	Fish in rivers, lakes and reservoirs	Northern and central breeder with wider winter distribution; also called Goosander
Red-breasted Merganser	Mergus serrator	Fish in sheltered marine water, estuaries and large lakes	Northern breeder and widespread coastal winter visitor
White-headed Duck	Oxyura leucocephala	Shallow to medium-depth lakes with rich submerged vegetation	Localized in Spain and parts of south-eastern and eastern Europe
Ruddy Duck	Oxyura jamaicensis	Vegetated lakes and reservoirs	Introduced; subject to control because of hybridization risk to White-headed Duck

Grebes, Loons, Cormorants and Pelicans Use Open Water Differently

These birds may appear together on open water, but their feeding systems differ. Grebes pursue fish and aquatic invertebrates underwater and often build floating nests among vegetation. Loons are powerful foot-propelled divers that breed mainly on northern lakes and move to coasts in winter. Cormorants chase fish and often rest with partly spread wings. Pelicans capture fish with the bill pouch and may feed cooperatively where fish are concentrated.

Common name	Scientific name	Wetland use	European pattern
Little Grebe	Tachybaptus ruficollis	Small lakes, ponds, slow rivers and reed-fringed channels	Widespread resident or partial migrant
Great Crested Grebe	Podiceps cristatus	Large lakes, reservoirs and sheltered coastal water	Widespread breeder and winter visitor
Red-necked Grebe	Podiceps grisegena	Vegetated breeding lakes and open coastal wintering water	Northern and eastern breeder; dispersed winter visitor
Horned Grebe	Podiceps auritus	Small northern lakes in summer and sheltered coasts in winter	Localized northern breeder and winter visitor; called Slavonian Grebe in much of Europe
Black-necked Grebe	Podiceps nigricollis	Shallow productive lakes, saline lagoons and reservoirs	Localized colonial breeder and migrant
Red-throated Loon	Gavia stellata	Small northern breeding pools and coastal wintering water	Northern breeder and widespread coastal migrant
Black-throated Loon	Gavia arctica	Clear northern lakes and marine wintering areas	Northern breeder and coastal winter visitor
Common Loon	Gavia immer	Large lakes and coastal bays	Breeds in Iceland and occurs as a scarce winter visitor elsewhere; often called Great Northern Diver
Yellow-billed Loon	Gavia adamsii	Arctic lakes and northern marine coasts	Regular only in the far north; scarce farther south
Pygmy Cormorant	Microcarbo pygmaeus	Fish-rich rivers, deltas, lakes and flooded woodland	Concentrated in south-eastern and eastern Europe, with expansion into central regions
Great Cormorant	Phalacrocorax carbo	Rivers, lakes, reservoirs, estuaries and coasts	Widespread resident, breeder, migrant and winter visitor
European Shag	Gulosus aristotelis	Rocky marine coasts and offshore feeding water	Mainly resident around Atlantic and Mediterranean coasts
Great White Pelican	Pelecanus onocrotalus	Shallow fish-rich lakes, deltas and lagoons	Localized breeder and migrant in south-eastern Europe
Dalmatian Pelican	Pelecanus crispus	Large lakes, deltas, reedbeds and coastal lagoons	Localized south-eastern European populations

Herons, Bitterns, Ibises, Spoonbills, Storks and Flamingos

Long legs do not mean that all large wading birds feed in the same way. Grey and Purple Herons often wait before striking. Little Egrets move actively through shallow water and may stir prey with their feet. Bitterns remain concealed in reeds and are often detected first by voice. Spoonbills sweep the partly open bill from side to side. Ibises probe soft substrate. Flamingos filter small organisms and suspended material with a highly specialized bill.

Common name	Scientific name	Feeding or nesting association	Broad European pattern
Eurasian Bittern	Botaurus stellaris	Large reedbeds with shallow feeding channels	Localized breeder, resident and migrant
Little Bittern	Botaurus minutus	Dense reeds, willow margins and small open pools	Summer breeder, strongest in central, eastern and southern Europe
Black-crowned Night Heron	Nycticorax nycticorax	Wooded wetland colonies and shallow nocturnal feeding sites	Localized summer breeder and migrant
Squacco Heron	Ardeola ralloides	Vegetated shallows, rice fields and marsh edges	Southern and south-eastern summer breeder
Western Cattle Egret	Ardea ibis	Grazed floodplains, rice fields and wetland margins	Southern stronghold with spread into western and central Europe
Grey Heron	Ardea cinerea	Shallow water, river margins, fields and fishponds	Widespread resident and migrant
Purple Heron	Ardea purpurea	Extensive reedbeds and densely vegetated marshes	Localized summer breeder, mainly central and southern
Great Egret	Ardea alba	Open shallows, floodplains and wet grassland	Formerly concentrated in the east and south-east; now much more widespread
Little Egret	Egretta garzetta	Active hunting in lagoons, estuaries, rivers and rice fields	Southern and western breeder with northward expansion
Glossy Ibis	Plegadis falcinellus	Soft mud, flooded grassland, marshes and rice fields	Localized colonial breeder and migrant, strongest in the south
Eurasian Spoonbill	Platalea leucorodia	Shallow sweeping in lagoons, estuaries and flooded basins	Localized breeder, passage migrant and winter visitor
Black Stork	Ciconia nigra	Forest streams, river shallows, pools and wet meadows	Summer breeder and long-distance migrant
White Stork	Ciconia ciconia	Wet grassland, floodplain, marsh edges and farmland	Widespread but uneven summer breeder; some populations now winter in Europe
Greater Flamingo	Phoenicopterus roseus	Shallow saline lagoons, saltpans and soda lakes	Mediterranean and south-eastern colonies with wide dispersal

Rails and Crakes Occupy the Boundary Between Water and Vegetation

Rails are often under-recorded because many spend most of their time inside reeds, sedges, flooded grass or dense bankside cover. Water Rail and small crakes may be heard more often than seen. Moorhens and coots use open water more freely. Corn Crake differs from the others by favouring tall, damp grassland rather than permanent open water.

Common name	Scientific name	Primary European habitat	Visibility and seasonal pattern
Water Rail	Rallus aquaticus	Reedbeds, sedge beds and muddy vegetated margins	Resident and migrant; frequently concealed
Corn Crake	Crex crex	Damp meadows, floodplain grassland and tall herb vegetation	Summer breeder; usually detected by its call
Spotted Crake	Porzana porzana	Shallow sedge marsh and seasonally flooded vegetation	Scarce summer breeder and passage migrant
Little Crake	Zapornia parva	Reedbeds with shallow open edges	Localized eastern and south-eastern breeder and migrant
Baillon’s Crake	Zapornia pusilla	Very shallow marsh with dense low vegetation	Localized and easily overlooked breeder or migrant
Purple Swamphen	Porphyrio porphyrio	Large reedbeds, marshes and vegetated lagoons	Localized in southern Europe
Common Moorhen	Gallinula chloropus	Ponds, canals, marsh margins and slow rivers	Widespread resident and migrant
Eurasian Coot	Fulica atra	Open lakes, reservoirs and vegetated freshwater	Widespread breeder with large winter gatherings
Red-knobbed Coot	Fulica cristata	Shallow lakes and marshes with abundant vegetation	Very localized in south-western Europe
Common Crane	Grus grus	Bogs, marshes, shallow roosts and wet agricultural landscapes	Northern and eastern breeder with major continental migration routes

Waders Divide Mud and Shallow Water Into Feeding Layers

Waders reduce direct competition by using different prey depths, substrates and movements. Plovers usually detect prey visually and stop before picking it from the surface. Sandpipers probe or peck while walking. Snipes push long bills into soft wet ground. Godwits and curlews reach deeper prey. Avocets sweep curved bills through shallow water, while phalaropes swim and pick prey from the surface.

A Long Bill Does Not Always Mean Deep Probing

Bill shape matters alongside length. The upturned bill of a Pied Avocet is used in a lateral sweeping action. The downcurved bill of a curlew reaches into sediment and around vegetation. A Ruff may peck, probe or take prey from the surface. Tidal conditions can also change behaviour: a species that probes wet mud at low tide may roost without feeding when the same surface is submerged.

Common name	Scientific name	Feeding zone or method	Broad European pattern
Eurasian Oystercatcher	Haematopus ostralegus	Shellfish, worms and other exposed intertidal prey	Coastal resident, breeder and migrant; inland breeding also occurs
Black-winged Stilt	Himantopus himantopus	Small prey in relatively deep shallow water	Southern stronghold with expansion into central and western Europe
Pied Avocet	Recurvirostra avosetta	Side-to-side sweeping in lagoons, saltpans and estuaries	Localized breeder and widespread coastal migrant
European Golden Plover	Pluvialis apricaria	Surface prey on tundra, moorland, wet grassland and fields	Northern breeder with large western wintering flocks
Grey Plover	Pluvialis squatarola	Visual surface feeding on tidal flats	Arctic breeder and widespread coastal migrant or winter visitor
Northern Lapwing	Vanellus vanellus	Surface and shallow-soil prey in wet grassland and farmland	Widespread breeder, migrant and winter visitor
Sociable Lapwing	Vanellus gregarius	Short grassland and steppe wetland margins	Rare eastern migrant with a very restricted European occurrence
White-tailed Lapwing	Vanellus leucurus	Shallow marsh edges and wet open ground	Localized in the far south-east and rare elsewhere
Common Ringed Plover	Charadrius hiaticula	Visual picking on sand, shingle and mud	Northern and coastal breeder with wide passage distribution
Little Ringed Plover	Thinornis dubius	Bare gravel, reservoir edges and river sediment	Summer breeder and migrant across much of Europe
Kentish Plover	Anarhynchus alexandrinus	Dry and damp surfaces around beaches, lagoons and saltpans	Localized southern and coastal breeder
Caspian Plover	Anarhynchus asiaticus	Open steppe and shallow wetland margins during migration	Rare passage species at Europe’s eastern edge
Eurasian Whimbrel	Numenius phaeopus	Probing on mudflats, saltmarshes and coastal grassland	Northern breeder and long-distance migrant
Eurasian Curlew	Numenius arquata	Deep probing in wet grassland, saltmarsh and tidal mud	Breeder, migrant and winter visitor across broad regions
Slender-billed Curlew	Numenius tenuirostris	Historically associated with steppe wetlands, lagoons and coastal marshes	Possibly extinct; modern regional presence has not been confirmed as a regular population
Black-tailed Godwit	Limosa limosa	Probing in wet meadows, marshes, rice fields and estuaries	Localized breeder with large migratory concentrations
Bar-tailed Godwit	Limosa lapponica	Deep probing on estuarine and coastal mudflats	Arctic breeder and coastal migrant or winter visitor
Ruddy Turnstone	Arenaria interpres	Turns stones, shells and debris to expose prey	Arctic breeder and widespread rocky-coast migrant
Red Knot	Calidris canutus	Molluscs and invertebrates on large tidal flats	Arctic breeder with major migration and wintering concentrations
Ruff	Calidris pugnax	Flexible pecking and probing in wet grassland and shallow marsh	Northern breeder and widespread migrant
Broad-billed Sandpiper	Calidris falcinellus	Fine probing in soft mud and shallow brackish margins	Scarce northern breeder and passage migrant
Curlew Sandpiper	Calidris ferruginea	Probing and picking on mudflats and shallow pools	Arctic breeder and long-distance passage migrant
Temminck’s Stint	Calidris temminckii	Slow surface picking around muddy freshwater margins	Northern breeder and passage migrant
Little Stint	Calidris minuta	Fine surface prey on exposed mud and very shallow water	Arctic breeder and regular passage migrant, strongest in the east and south
Sanderling	Calidris alba	Runs along wave-washed sand and picks exposed prey	Arctic breeder and widespread coastal migrant or winter visitor
Dunlin	Calidris alpina	Pecking and shallow probing on mudflats and marsh edges	Northern breeder with very large migratory and wintering populations
Purple Sandpiper	Calidris maritima	Rocky coasts, harbour walls and wave-washed shorelines	Northern breeder and winter visitor to exposed coasts
Jack Snipe	Lymnocryptes minimus	Soft mud and saturated vegetation	Northern breeder and secretive migrant or winter visitor
Great Snipe	Gallinago media	Wet meadows, sedge marsh and soft soil	Localized eastern and northern breeder and long-distance migrant
Common Snipe	Gallinago gallinago	Deep probing in wet mud, marsh and flooded grassland	Widespread breeder, migrant and winter visitor
Terek Sandpiper	Xenus cinereus	Rapid surface feeding with an upturned bill on tidal mud	Eastern breeder and scarce but regular passage migrant
Red-necked Phalarope	Phalaropus lobatus	Swimming and surface picking on pools and shallow open water	Northern breeder and pelagic migrant
Red Phalarope	Phalaropus fulicarius	Surface feeding at sea and on Arctic pools	Arctic breeder; mainly offshore during migration, with storm-driven coastal records
Common Sandpiper	Actitis hypoleucos	Walking and bobbing along river, lake and reservoir edges	Widespread summer breeder and migrant
Green Sandpiper	Tringa ochropus	Shaded pools, muddy ditches and wooded wetland edges	Northern breeder and widespread migrant or winter visitor
Spotted Redshank	Tringa erythropus	Active feeding in shallow water and soft mud	Northern breeder and widespread migrant
Common Greenshank	Tringa nebularia	Fish and invertebrates in estuaries, pools and shallow lakes	Northern breeder and widespread migrant
Marsh Sandpiper	Tringa stagnatilis	Delicate picking in shallow freshwater and saline pools	Eastern breeder and passage migrant, strongest in south-eastern Europe
Wood Sandpiper	Tringa glareola	Shallow freshwater pools, flooded meadows and marsh edges	Northern breeder and abundant passage migrant in suitable regions
Common Redshank	Tringa totanus	Wet grassland, saltmarsh, estuary and shallow coastal pools	Breeder, migrant and winter visitor
Collared Pratincole	Glareola pratincola	Aerial insect feeding over open marshes and dry wetland margins	Localized southern and south-eastern summer breeder
Black-winged Pratincole	Glareola nordmanni	Steppe wetlands, grazed floodplains and open shallow basins	Rare eastern passage species with limited breeding at Europe’s edge

Gulls and Terns Link Lagoons, Rivers, Estuaries and Coasts

Not every gull or tern is primarily a wetland bird, yet many European species depend on lagoons, river islands, saltpans, estuaries, reservoirs and shallow coastal waters for feeding or nesting. Terns often require open, predator-limited nesting surfaces. Small changes in island height or water level can determine whether a breeding colony remains isolated from terrestrial predators.

Common name	Scientific name	Main wetland association	Broad European pattern
Little Gull	Hydrocoloeus minutus	Shallow lakes, marshes, estuaries and coastal migration routes	Localized eastern and northern breeder; widespread migrant
Ross’s Gull	Rhodostethia rosea	Arctic wetlands, pack-ice margins and northern coasts	Regular mainly in Arctic Europe and rare farther south
Black-headed Gull	Chroicocephalus ridibundus	Marsh colonies, lakes, reservoirs, estuaries and farmland	Widespread breeder, migrant and winter visitor
Mediterranean Gull	Ichthyaetus melanocephalus	Lagoon islands, marsh colonies, estuaries and coasts	Expanded from south-eastern origins into western and central Europe
Slender-billed Gull	Chroicocephalus genei	Saline lagoons, saltpans and shallow Mediterranean coasts	Localized southern breeder and migrant
Common Gull	Larus canus	Lakes, rivers, estuaries, wet fields and coasts	Northern and central breeder with broad winter distribution
Audouin’s Gull	Ichthyaetus audouinii	Mediterranean islands, lagoons and fishing waters	Localized Mediterranean breeder
Yellow-legged Gull	Larus michahellis	Mediterranean coasts, reservoirs, rivers and urban wetlands	Widespread in southern Europe with expansion beyond the Mediterranean
Caspian Gull	Larus cachinnans	Large rivers, reservoirs, fishponds, landfills and coasts	Eastern and central breeder with westward dispersal
European Herring Gull	Larus argentatus	Coasts, estuaries, islands, reservoirs and urban waters	Widespread in northern and western Europe
Lesser Black-backed Gull	Larus fuscus	Coasts, estuaries, islands, reservoirs and river systems	Widespread breeder and long-distance migrant
Great Black-backed Gull	Larus marinus	Northern coasts, estuaries, islands and large inland waters	Resident and migrant in northern and western Europe
Gull-billed Tern	Gelochelidon nilotica	Saltpans, lagoons, deltas and nearby dry feeding ground	Localized southern summer breeder
Caspian Tern	Hydroprogne caspia	Large lakes, deltas, lagoons and sheltered coasts	Localized breeder and wide-ranging migrant
Sandwich Tern	Thalasseus sandvicensis	Coastal islands, lagoons, estuaries and shallow sea	Colonial breeder around Atlantic, North Sea, Baltic and Mediterranean coasts
Common Tern	Sterna hirundo	River islands, lakes, reservoirs, lagoons and coasts	Widespread summer breeder and migrant
Arctic Tern	Sterna paradisaea	Northern coasts, islands, lakes and estuaries	Northern breeder and very long-distance migrant
Little Tern	Sternula albifrons	Bare sand, shingle, saltpan banks and lagoon islands	Localized coastal and riverine summer breeder
Whiskered Tern	Chlidonias hybrida	Floating vegetation, shallow marshes and fishponds	Localized central, eastern and southern breeder
White-winged Tern	Chlidonias leucopterus	Flooded grassland, shallow marshes and temporary wetlands	Eastern breeder and widespread passage migrant
Black Tern	Chlidonias niger	Freshwater marshes with floating vegetation	Localized breeder and broad passage migrant

European Wetland Regions Support Different Assemblages

Atlantic Estuaries and the Wadden Sea

Large tidal systems support dense concentrations of Dunlin, Red Knot, Bar-tailed Godwit, Eurasian Curlew, Grey Plover, Eurasian Oystercatcher, Common Shelduck and Brant Goose. Feeding mudflat and high-tide roost are separate resources. A mudflat may remain productive while the site loses much of its value because safe roosting ground has been developed or repeatedly disturbed.

Baltic Bays, Archipelagos and Coastal Meadows

The Baltic combines low-salinity marine water, islands, reedbeds, coastal grassland and major migration corridors. Long-tailed Ducks, scoters, Common Goldeneyes, mergansers, swans and geese may gather in open bays, while meadow-breeding lapwings, redshanks and other waders use the land–water boundary.

Danube Floodplains and Black Sea Wetlands

River branches, flooded forest, reedbeds, shallow lakes, steppe lagoons and coastal deltas support pelicans, Pygmy Cormorants, herons, ibises, spoonbills, geese, ducks and passage waders. The region also forms a bridge between northern breeding grounds, eastern migration routes and Mediterranean or African wintering areas.

Mediterranean Lagoons, Rice Fields and Saltpans

Seasonal drying and managed water levels create alternating nesting islands, shallow feeding basins and exposed mud. Greater Flamingos, Pied Avocets, Black-winged Stilts, Kentish Plovers, Glossy Ibises, spoonbills, egrets and terns may depend on these changing surfaces. Rice fields can replace part of the shallow-water feeding habitat lost elsewhere, but their value varies with flooding schedule and chemical use.

Northern Lakes, Bogs and Tundra Pools

Northern wetlands hold breeding loons, grebes, phalaropes, scoters, goldeneyes, mergansers, geese and many shorebirds. Some use very small fishless pools for nesting but move to larger lakes or marine coasts after breeding. Conditions on the breeding grounds can affect bird numbers observed thousands of kilometres away during migration or winter.

The Wetland Bird Calendar Is Not the Same Across Europe

In northern Europe, lakes may remain frozen while Mediterranean wetlands already hold nesting herons, stilts or flamingos. Spring passage brings Arctic-bound waders through Atlantic estuaries, inland floodplains and Mediterranean lagoons. Many remain only long enough to replace body reserves before continuing north.

During summer, water levels affect nest access, food depth and exposure to predators. Grebes and terns may lose nests after rapid rises. Crakes, snipes and meadow-breeding waders may fail when temporary wetlands dry too early or vegetation is cut before chicks can move.

After breeding, several duck species enter a period when the flight feathers are replaced together and flight is temporarily lost. Secure moulting water can therefore be as important as the nesting site. Autumn then brings adults and young birds into the same migration system, often in duller plumage than shown in identification images centred on breeding males.

Winter distribution depends on ice, temperature, water depth, food and disturbance. A decline in one country’s count may reflect movement toward newly ice-free areas rather than an equal decline in the whole flyway population. The opposite can also occur: a local increase can be produced by redistribution while the wider population remains depleted.

Similar Species Require Structure and Behaviour, Not Colour Alone

Plumage changes with age, sex, season, feather wear and light. Shape, feeding movement, leg position in flight, wing pattern, voice and habitat often remain more useful than one apparent colour. Female ducks and non-breeding waders are especially likely to be misidentified when only bright adult breeding plumage is considered.

Species pair	Most useful distinction	Supporting feature	Common complication
Great Egret and Little Egret	Great Egret is much larger, with a long neck and heavier proportions	Adult Little Egret normally has a dark bill and conspicuous yellow feet	Bill and leg colours change with season and age
Grey Heron and Purple Heron	Purple Heron is slimmer, longer-necked and strongly associated with reeds	In flight, Purple Heron often appears narrower with darker wing contrast	Young birds lack the clean adult head pattern
Common Pochard and Tufted Duck	Common Pochard has a longer, more sloping head profile	Tufted Duck usually appears shorter-bodied and more compact	Females and eclipse males can show weak colour contrast
Greater Scaup and Tufted Duck	Greater Scaup has a broader, rounder head and lacks a true rear crest	Wing pattern and bill-tip pattern help when visible	Head shape changes with posture, wind and wet feathers
Eurasian Coot and Common Moorhen	Coot has a white bill and frontal shield; moorhen has red and yellow on the bill	Coot is more likely to remain on open water	Young birds do not show full adult bill colour
Black-tailed and Bar-tailed Godwit	Black-tailed Godwit shows a bold white wing bar in flight	Bar-tailed Godwit has shorter legs and a more upturned bill	Body colour varies greatly between breeding and non-breeding plumage
Dunlin and Curlew Sandpiper	Curlew Sandpiper is longer-legged with a longer, more evenly curved bill	A white rump is visible on Curlew Sandpiper in flight	Juveniles and non-breeding adults lack the familiar red breeding colour
Common Redshank and Spotted Redshank	Spotted Redshank is longer-legged, longer-billed and more elegant	Flight call and feeding depth are useful	Non-breeding Spotted Redshank is not black
Common Sandpiper and Green Sandpiper	Common Sandpiper has a low horizontal shape and a clear white shoulder notch	Green Sandpiper has a darker upper body and contrasting white rump	Both bob their rear body and use freshwater margins
Common Ringed and Little Ringed Plover	Little Ringed Plover has a fine bill and, in adults, a clear yellow eye-ring	Wing bar is stronger in Common Ringed Plover	Juvenile Little Ringed Plovers may not show a bright eye-ring

European Red List Results Differ Among Waterbird Groups

The 2021 European Red List assessed 544 bird species across the European region. Thirteen percent were placed in threatened categories at the European level, and 30% had decreasing population trends. Wildfowl and waders were among the groups with the highest shares of threatened or Near Threatened species. More than 40% of species in each of those two groups had decreasing European trends. Five of nine assessed rails and crakes and three of five grebes were also reported as decreasing. European Red List of Birds 2021

European and Global Categories Can Differ

A regional assessment asks about extinction risk within Europe. The global IUCN category asks about the entire species. A species can be secure globally but threatened in Europe, or have a stable European wintering count while its European breeding population declines. The assessment scale and year should remain attached to every status statement.

What the 2025 Wintering Waterbird Analysis Shows

The International Waterbird Census is a coordinated site-based monitoring programme that began in Europe in 1967. Its core January counts are designed to track wintering waterbirds through national schemes. The 2025 European Union analysis examined 33 selected species whose wintering populations can be monitored reasonably well through this system. Geese feeding mainly on farmland, gulls and waterbirds wintering mainly at sea were excluded from that analysis, so the results must not be treated as a trend for every European waterbird. EU wintering waterbird trends, 2025 update

Species or policy group	Long-term annual trend	Recent annual trend	Meaning within the report
Seven Annex I species combined	Increasing since 1980	About +2% per year during the latest decade	Six of seven had higher indexed wintering numbers than around the start of the Birds Directive period
Greater Flamingo	+7.6% per year	+3.3% per year	Strong rise in counted EU wintering numbers across the included populations
Great Egret	+8.8% per year	+1.1% per year	Large long-term increase accompanied by expansion into north-western Europe
White-headed Duck	+1.9% per year	+8.1% per year	EU total increased, although Spain and south-eastern wintering areas did not follow one uniform pattern
Tundra Swan, Bewick’s populations	-0.4% per year	-1.1% per year, statistically classified as stable	Decline at the western edge occurred alongside growth in parts of central and south-eastern Europe
Eighteen Annex II species combined	Below the 1980 baseline after a long decline	+0.8% per year during the latest decade	Recent improvement had not restored the combined index to earlier levels
Common Pochard	-1.4% per year	+2.2% per year	A partial recovery followed the decline that continued into the mid-2010s
Common Goldeneye	Approximately 0% per year	+1.3% per year	Stable combined long-term total masked redistribution among European regions
Tufted Duck	-0.3% per year	-0.4% per year, classified as stable	Counted wintering numbers remained below earlier levels despite the weak recent rate

Winter counts measure wintering distribution and abundance, not the breeding success of every population represented in the flock. A bird counted in an EU wetland may have bred in the Arctic, western Siberia or another area outside the European Union.

Why Wintering Ranges Move North and East

Warmer winters allow some ducks, swans, geese and other waterbirds to remain closer to breeding areas instead of moving to traditional western or southern wintering grounds. The 2025 IWC analysis found regional redistribution in several species, including Common Goldeneye, Red-breasted Merganser, Smew, Whooper Swan and Bewick’s Swan. National declines can therefore occur while numbers rise elsewhere.

Redistribution does not make site loss harmless. Birds still need a connected sequence of secure feeding, moulting, resting and wintering wetlands. A newly occupied northern site may lack legal protection, suitable roosts or management designed for the numbers now using it. Traditional southern wetlands may also remain necessary during severe cold periods.

Water Management Can Improve One Guild While Harming Another

Maintaining a wetland does not mean holding one water level throughout the year. Deep permanent water may favour diving birds while removing exposed sediment needed by small waders. Extensive reed growth may help bitterns yet cover feeding pools used by dabbling ducks. Complete summer drying can expose mud for migrants but eliminate fish, aquatic plants or nesting cover if it occurs too early or too often.

Pressure or management change	Wetland response	Bird groups most directly exposed	Possible field consequence
Permanent drainage	Loss of shallow water, wet soil and temporary pools	Crakes, snipes, dabbling ducks, godwits and wet-meadow breeders	Shorter feeding season, nest loss and fewer migration stopovers
River embankment and flood suppression	Reduced floodplain renewal and fewer seasonal wetlands	Geese, ducks, lapwings, cranes, herons and passage waders	Birds concentrate in fewer managed sites or move to farmland
Uniformly deep water	Loss of mudflat and shallow feeding margins	Small waders, stilts, avocets and dabbling ducks	Open water remains visible, but accessible food declines
Rapid water-level rise	Flooded islands and floating nests	Terns, gulls, grebes and ground-nesting waders	Nest failure during a short breeding window
Excess nutrients	Algal growth, oxygen change and altered plant or fish communities	Grebes, diving ducks, coots, fish-eating birds and herbivorous waterfowl	Initial food increases may be followed by loss of water clarity or prey
Sediment and coastal engineering	Changed tidal channels, erosion and mudflat extent	Oystercatchers, knots, dunlins, godwits, curlews and shelducks	Feeding areas or high-tide roosts shift beyond safe access
Repeated recreation disturbance	Birds leave feeding, nesting or roosting areas	Large flocks, colonial nesters and birds with limited alternative sites	Lost feeding time and greater energy expenditure
Early mowing	Removal of tall grass and nest cover	Corn Crake, Northern Lapwing, Black-tailed Godwit and Common Redshank	Destruction of nests or death of flightless chicks
Loss of nesting islands	Greater access for foxes and other terrestrial predators	Terns, gulls, avocets, stilts and colonial waterbirds	Colony abandonment or repeated breeding failure

Hunting Pressure and Lead Exposure Affect Several Waterbird Groups

The EU Birds Directive protects naturally occurring wild birds while allowing regulated hunting of listed species under defined conditions. Legal harvest, illegal killing and accidental poisoning are separate pressures and should not be combined into one category. Harvest effects depend on the species, population, timing, location and ability of monitoring systems to detect change.

Lead shot deposited in wetlands can be swallowed by ducks, geese and swans while they take grit or food from sediment. Predators and scavengers may then be exposed through contaminated prey. EU restrictions on lead shot in and around wetlands are intended to reduce this pathway. European Commission guidance on hunting and wetland lead

Avian Influenza Is a Current Wild-Waterbird Health Pressure

Highly pathogenic avian influenza A(H5) continued to circulate among European wild birds during 2026. Between 28 February and 4 June 2026, authorities reported 763 detections in wild birds across 30 European countries. Detections fell during spring, but the figure records reported infected birds or events; it is not an estimate of the total number of wild birds exposed or killed. ECDC and EFSA avian influenza overview

Sick or Dead Waterbirds Should Not Be Handled

Unusual mortality, birds showing neurological signs or groups of dead waterbirds should be reported through the relevant national wildlife or veterinary authority. People and dogs should be kept away from carcasses unless local officials give different instructions.

Flyway Protection Depends on a Chain of Sites

A bird may depend on separate breeding, moulting, staging and wintering sites located in different countries. AEWA addresses this geographic problem across the African-Eurasian migration system. The International Waterbird Census supplies long-term count evidence, while the Waterbird Population Estimates process defines biogeographic populations rather than treating every individual of a species as one interchangeable unit.

Under the Convention on Wetlands, a site may qualify under the waterbird population criterion when it regularly supports at least 1% of a defined population of one waterbird species or subspecies. The threshold identifies international concentration sites; it does not imply that wetlands below 1% lack ecological value. Smaller wetlands may form essential stepping stones, drought refuges or parts of a larger functional complex. Global Waterbird Estimates Partnership

Within the European Union, the Birds Directive requires habitat protection for listed species and other migratory birds, with particular attention to wetlands of international importance. Special Protection Areas form part of Natura 2000. The Nature Restoration Regulation adds restoration duties for habitats and protected-species habitat, including wetlands, rivers and lakes. EU Birds Directive EU Nature Restoration Regulation

Observing Wetland Birds Without Displacing Them

Wetland birds often reveal disturbance before they fly. Feeding stops, heads rise, tightly resting flocks begin walking away and adults move between an observer and their chicks. Continued approach after these responses reduces feeding or resting time even when no bird leaves the wetland.

Remain outside closed breeding areas, colony islands and marked high-tide roosts.
Use existing paths, hides and observation points rather than approaching across open mud or marsh.
Keep dogs controlled near nesting beaches, saltmarshes, wet meadows and resting flocks.
Avoid playback around bitterns, rails, crakes and other concealed territorial birds.
Do not launch drones over reedbeds, colonies, roosts or concentrations of moulting waterfowl.
Use binoculars or a telescope instead of reducing the distance until birds react.
Leave feeding and roosting routes open when birds move between water, mudflat and grassland.

Sources and Verification

AviList: The Global Avian Checklist, v2025b — Taxonomic baseline for accepted scientific names, family placement and primary English names.
BirdLife International, European Red List of Birds 2021 — European assessment scope, threatened-category totals and trend findings for wildfowl, waders, rails, crakes and grebes.
BirdLife International, Birds in Europe 4 — Wider European population-status context and conservation-concern assessment.
Agreement on the Conservation of African-Eurasian Migratory Waterbirds — Waterbird group coverage and flyway-scale conservation context.
Wetlands International Europe, Trends of Wintering Waterbirds in the European Union: 2025 Update — Species selection, annual trend estimates, population redistribution and limits of the EU wintering analysis.
International Waterbird Census — Coordinated January monitoring, national count schemes and multispecies trend data.
Convention on Wetlands, Global Waterbird Estimates Partnership — Biogeographic population estimates and their use in identifying internationally important wetlands.
European Commission, Birds Directive — Protection of naturally occurring wild birds, migratory species and Special Protection Areas.
European Commission, Nature Restoration Regulation — Restoration requirements applying to wetlands, rivers, lakes and protected-species habitat.
ECDC and EFSA, Avian Influenza Overview: March–May 2026 — Reported HPAI detections in European wild birds and the spring 2026 epidemiological pattern.