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Wading birds

Wading birds are one of the six major ecological groups of birds, including Gruiformes, Ciconiiformes, Phoenicopterus and Charadriiformes. They refer to birds that are adapted to living by the water (all wetland water birds), and belong to one of the six major ecological groups of birds. When resting, they often stand on one foot, and most of them get food from the bottom of the water, mud or the ground. They include cranes, storks, ibis, bustards, spoonbills, etc.

I. Overview of Wading Birds

1. Definition and Characteristics

  • Shallow-Water Activity: Wading birds typically inhabit shallow water, mudflats, wetlands, or marshes, using relatively long legs to walk and forage in shallow areas.

  • Morphological Adaptations: They often have elongated legs, necks, and bills, enabling them to hunt or feed on fish, crustaceans, mollusks, insects, or vegetation in shallow water or wetland habitats.

  • Wide Distribution: Wading birds appear worldwide, found in lakes, estuaries, tidal flats, and even salt lakes. Many species undertake long-distance migrations, occurring on multiple continents.

  • Breeding and Behavior: Most nest in shoreline areas, marshes, or mudflats; some breed in colonies. Certain species have unique courtship displays, calls, or gregarious habits.

2. Diversity and Ecological Role

  • Many well-known groups such as storks, herons, cranes, plovers, sandpipers, and flamingos can be considered waders (or at least show wader-like habits).

  • They fulfill vital roles in wetland and coastal ecosystems (e.g., controlling invertebrate populations, dispersing seeds, and forming important links in the food web).


II. Evolutionary History of Wading Birds

  1. Broader Avian Context

    • Birds originated from theropod dinosaurs and had diversified substantially by the Late Cretaceous. Over geological time, various lineages adapted to shallow water or wetland environments.

    • Long legs, long bills, specialized feeding/breeding behaviors, and other wader-like traits evolved multiple times independently (convergent evolution).

  2. Dispersed Across Multiple Orders

    • Storks (Family Ciconiidae) are typically placed in Ciconiiformes.

    • Herons and ibises (Ardeidae, Threskiornithidae) are now often placed in Pelecaniformes alongside pelicans, rather than with storks.

    • Cranes (Gruidae) belong to Gruiformes, not closely related to storks/herons, yet they occupy similar wetland niches.

    • Some members of Charadriiformes (plovers, sandpipers, avocets) are also classic waders.

    • Flamingos (Phoenicopteridae) constitute Phoenicopteriformes, recognized as a distinct lineage yet often called waders because of their shallow-water feeding style.

    • Traditional classifications grouped storks, herons, cranes, etc., under orders like “Ciconiiformes” or “Pelecaniformes.” Flamingos were sometimes placed in a separate order.

    • With advances in molecular data, many of these families have been reclassified. For example:

  3. Relationship with Wetlands and Humans

    • Wetlands are crucial for wader breeding and foraging. Human activities such as draining wetlands, pollution, or overharvesting resources pose serious threats to these birds.

    • Many wading species are migratory, requiring international cooperation for their conservation (e.g., partnerships in the East Asian–Australasian Flyway).


III. Major Wader Groups and Classification

Below is a summary of key orders and families commonly labeled as “waders,” with prominent genera and example species. Note that some families once grouped together have been rearranged according to modern molecular studies. Nonetheless, their similar ecology and morphology justify listing them here for reference.

(1) Pelecaniformes – Wading Families

FamilyRepresentative GeneraExample SpeciesNotes
Ardeidae (Herons, Egrets, Bitterns)Ardea (Herons), Egretta (Egrets), Nycticorax (Night Herons), etc.Grey Heron (Ardea cinerea), Great Egret (Egretta alba), Black-crowned Night Heron (Nycticorax nycticorax), etc.Long legs and necks, typically hunt fish/amphibians in shallow water; may form nesting colonies (“heronries”).
Threskiornithidae (Ibises, Spoonbills)Threskiornis (Ibises), Plegadis (Glossy Ibises), Platalea (Spoonbills)Sacred Ibis (Threskiornis aethiopicus), Glossy Ibis (Plegadis falcinellus), Black-faced Spoonbill (Platalea minor), etc.Often have curved or spatulate bills for probing in shallow waters. Many nest colonially in wetland habitats.

Note: Historically, herons and ibises were sometimes placed in “Ciconiiformes.” Modern molecular data commonly group them in Pelecaniformes.


(2) Ciconiiformes – The Storks

FamilyRepresentative GeneraExample SpeciesNotes
Ciconiidae (Storks)Ciconia (Storks), Mycteria (Wood Storks), Leptoptilos (Marabou Storks), etc.White Stork (Ciconia ciconia), Painted Stork (Mycteria leucocephala), Lesser Adjutant (Leptoptilos javanicus), etc.Large-bodied waders with strong bills, foraging in wetlands/grasslands; nest on treetops or cliffs.

Note: Some classifications once placed storks, herons, and ibises all under one order. In current systems, storks (Ciconiidae) are often recognized as a distinct order (Ciconiiformes), with herons and ibises now under Pelecaniformes.


(3) Phoenicopteriformes – Flamingos

FamilyRepresentative GeneraExample SpeciesNotes
Phoenicopteridae (Flamingos)Phoenicopterus (e.g., Greater Flamingo)American Flamingo (Phoenicopterus ruber), Chilean Flamingo (Phoenicopterus chilensis), etc.Long legs and necks; specialized bent bills for filter-feeding on algae and invertebrates in saline lagoons.

(4) Gruiformes – Select Wading Families

FamilyRepresentative GeneraExample SpeciesNotes
Gruidae (Cranes)Grus (Cranes), Anthropoides, etc.Red-crowned Crane (Grus japonensis), Common Crane (Grus grus), etc.Large waders with long legs/necks, living in wetlands/grasslands; many are migratory and some are endangered.
Rallidae (Rails, Coots)*semi-aquaticGallinula (Moorhens), Fulica (Coots), Rallus (Rails), etc.Eurasian Coot (Fulica atra), White-breasted Waterhen (Amaurornis phoenicurus), etc.Generally small to medium-sized wetlands birds, adept at moving through dense vegetation, sometimes called “marsh birds.”

(5) Charadriiformes – Shorebirds and Allies

FamilyRepresentative GeneraExample SpeciesNotes
Charadriidae (Plovers)Charadrius (Plovers), Pluvialis (Golden Plovers), etc.Kentish Plover (Charadrius alexandrinus), Grey Plover (Pluvialis squatarola), etc.Small to medium-sized waders with short bills, often feeding on invertebrates in mudflats/shallow water. Highly migratory.
Scolopacidae (Sandpipers, Snipes, Phalaropes)Tringa (Shanks), Calidris (Stints), Gallinago (Snipes), etc.Common Redshank (Tringa totanus), Ruddy Turnstone (Arenaria interpres), Semipalmated Sandpiper (Calidris pusilla), etc.A diverse family of long-billed, long-legged waders frequenting coasts, wetlands, and river edges.
Recurvirostridae (Avocets, Stilts)Recurvirostra (Avocets), Himantopus (Stilts)Pied Avocet (Recurvirostra avosetta), Black-winged Stilt (Himantopus himantopus)Notable for very long legs and upward-curved or straight slender bills; often seen in shallow salt ponds.
Phalaropodidae (Phalaropes)* sometimes merged in ScolopacidaePhalaropus (Phalaropes)Red-necked Phalarope (Phalaropus lobatus), etc.Unique small waders that often spin on the water’s surface to stir up food; found in high latitudes and coastal areas.

Note: Phalaropes are sometimes treated as a subfamily within sandpipers (Scolopacidae) or as a separate family.


IV. Summary

  1. Multiple Origins and Convergence

    • “Waders” do not represent a single evolutionary lineage; rather, many avian orders independently adapted to shallow-water habitats, converging on features such as long legs/neck/bill.

    • This demonstrates how different lineages fill similar ecological niches in wetland habitats around the globe.

  2. Ecological Importance and Conservation

    • Many waders help regulate invertebrate populations, recycle nutrients, and disperse seeds in aquatic environments.

    • Wetland loss, drainage, pollution, and climate change pose significant threats. Because many waders undertake long migrations, international cooperation is critical for conservation.

  3. Dynamic Taxonomy and Birdwatching Significance

    • Advances in molecular phylogenetics frequently revise the classification of these families and orders. New data clarify true evolutionary relationships among “wading birds.”

    • For birders and educators, recognizing key family traits and habitat requirements aids in appreciating wetland ecology and promoting the protection of these water-associated species.


This summary offers a preliminary classification framework and evolutionary background for the ecological grouping we call “wading birds.” For further details on specific families, genera, or species, consult specialized ornithological guides, scientific publications, or regional bird-monitoring data.

Waterfowl Wading birds Climbing birds Landfowl Bird of prey Songbird
Grus vipio

Grus vipio

Grus vipio,White-naped Crane, red-faced crane, white-crowned crane, native crane

Features:On the Korean Peninsula, the white-naped crane is seen as a symbol of peace.

White-naped Crane is a large wading bird with no subspecies.White-naped Crane mainly feeds on plant seeds, grass roots, young leaves, young shoots, grains, fish, frogs, lizards, tadpoles, shrimps, mollusks and insects. When feeding, they mainly use their beaks to peck, or use their beaks to first op...

Porphyrio porphyrio

Porphyrio porphyrio

Porphyrio porphyrio,Purple Swamphen, Purple Gallinule, Purple Swamp-Hen,Poule sultane

Features:Purple feathers, flaming red lips

Purple moorhen is called pukeko in foreign language. It is a medium-sized wading bird with 13 subspecies.Purple moorhen often moves in pairs or family groups. It is docile and timid, mostly active in the early morning and dusk, hiding in the reeds during the day. It is noisy when active, making freq...

Grus canadensis

Grus canadensis

Grus canadensis,Brown Crane, Canada Crane

Features:The face is white, the forehead and crown are red, and the whole body feathers are gray with brown.

Sandhill Crane is a large wading bird with the largest number of cranes in the world. It is divided into 6 subspecies with a total of more than 800,000 individuals. However, there are about 120 individuals in the Mississippi species and less than 100 individuals in the Cuban subspecies. Both are end...

Grus leucogeranus

Grus leucogeranus

Grus leucogeranus,Siberian Crane ,Siberian White Crane, Snow Crane,Siberian Crane, Nun Crane, Snow Crane

Features:It symbolizes good luck and longevity in Chinese culture and is the provincial bird of Jiangxi Province.

The Siberian Crane is a large wading bird. Although it is divided into three populations, namely the eastern, central and western populations, it is a monotypic species with no subspecies differentiation. Known as the "living fossil" of birds, there are less than 4,000 of them in the world...

Porzana paykullii

Porzana paykullii

Porzana paykullii,Band-bellied Crake

Features:The upper body is olive brown, the wing coverts have white horizontal stripes, and the front edge of the wings is white when flying.

Band-bellied Crake, whose foreign name is Band-bellied Crake, is a small wading bird with no subspecies.Spotted frogs migrate to Northeast China to breed in mid-to-late April in spring, and migrate away from their breeding grounds in late September and early October in autumn.Spotted frogs often liv...

Zapornia parva

Zapornia parva

Zapornia parva,Porzana parva,Little Crake

Features:Green bill, red base, dark green feet

Little Crake is a small wading bird with no subspecies.The frog often moves alone or in family groups. It is good at swimming and diving. It often swims among the reeds and water grass in the pond. Sometimes it also moves outside the reeds or on the water surface far from the shore, especially in th...

Zapornia bicolor

Zapornia bicolor

Zapornia bicolor,Black-tailed Crake,Amaurornis bicolor,Porzana bicolor,Black-tailed bittern

Features:A medium-sized frog with a distinct chestnut and almost black coloration.

The brown-backed frog is called Black-tailed Crake in foreign language, and has no subspecies.The brown-backed frog is a resident bird. It likes to move in streams with vegetation on one side and open grassland on the other side. Its living habits are very similar to those of the red-footed bittern....

Crex crex

Crex crex

Crex crex,Corncrake, Corn Crake

Features:Its long, rusty-brown wings are a distinctive feature when in flight.

The foreign name of the long-legged rail is Corncrake, Corn Crake, which is a small wading bird with no subspecies.The long-legged rail is a summer migratory bird in China. It migrates to my country in late April in spring and migrates away in October in autumn. Good at hiding, hiding in the grass o...

Coturnicops exquisitus

Coturnicops exquisitus

Coturnicops exquisitus,Swinhoes Yellow Rail

Features:It is the smallest frog in China, not a frog.

The foreign name of the Swinhoes Yellow Rail is Swinhoes Yellow Rail, and there is no subspecies.Some of the Swinhoes Yellow Rail are summer migratory birds, while others are winter migratory birds. In Northeast China, they are mostly summer migratory birds, in the east, they are winter migratory bi...

Tetrax tetrax

Tetrax tetrax

Tetrax tetrax, Little Bustard,Outarde canepetière, Sisón,Ground

Features:The neck has a white horizontal band and a "V" shaped diagonal band

Little Bustard, also known as Little Bustard in English, is a large bird of the family Bustard, with no subspecies.Little Bustards often gather in large groups during the non-breeding season, sometimes up to several thousand, and are active during the day. Male birds in the wintering group have coll...

Chlamydotis macqueeni

Chlamydotis macqueeni

Spotted Bustard、Chlamydotis macqueeni,Macqueen's Bustard

Features:The bustard is smaller than the larger one, and looks like a chicken, but has only three toes.

Houbara Bustard, also known as Macqueen's Bustard, has no subspecies. A large ground-dwelling bird, once a subspecies of the Ruffed-jawed Bustard, it has been reclassified as an independent species.Like other bustards, the Houbara Bustard is a bird of open and desert areas. In Xinjiang, it mainl...

Otis tarda

Otis tarda

Otis tarda,Great Bustard,Avutarda, Avutarda Común,Додук, Մեծ արոս, Дуадақ,Ground quail, old brocade, lone leopard, wild goose

Features:It is one of the two largest species of bustard birds (the other is the Grey-necked Bustard).

The Great Bustard has two subspecies, both of which are distributed in China. The common subspecies breeds in Qiqihar, Heilongjiang, Tongyu and Zhenlai, Jilin, northwest Liaoning, and Inner Mongolia. It hibernates in Liaoning, Hebei, Shanxi, Henan, Shandong, Shaanxi, Jiangxi, Hubei and other provinc...

Anthropoides virgo

Anthropoides virgo

Anthropoides virgo,Demoiselle Crane,Lady Crane

Features:There is a tuft of white ear feathers behind the eye that is very eye-catching. There are relatively few of them in my country, and it is a very rare and uncommon bird.

The Demoiselle Crane is the smallest crane. It is blue-gray in color, with black eyes, sides of the head, throat and front neck. There is a white ear tuft behind the eyes that is very eye-catching. The black feathers on the front neck are extended and hang on the chest. The feet are black, and the w...

Grus japonensis

Grus japonensis

Grus japonensis,Red-crowned Crane, Japanese Crane, Manchurian Crane,Crane, Red-crowned Crane, White Crane, Mantilla

Features:The legendary crane, known as the "God of the Wetlands", is often painted together with pine trees as a symbol of longevity.

The red-crowned crane is a large wading bird with a bright red head and distinct black and white bodies. It has very distinct features and is easy to identify. The skeleton of the red-crowned crane is hard on the outside and hollow on the inside. It is 7 times stronger than human skeletons. When mig...

Grus grus

Grus grus

Grus grus,Common Crane,Thousand-year-old crane, black crane, sweet potato crane

Features:The grey crane is the most numerous and widely distributed species of crane in the world, with an existing population of over 700,000.

Grey cranes are large wading birds with obvious identification characteristics in the wild. They have very long necks and legs, and their feathers are mostly gray. The bare skin on the top of the head is bright red, and there are sparse black hair-like short feathers. There is a gray-white vertical...

Grus monacha

Grus monacha

Grus monacha,Hooded Crane,Pot Crane, Black Crane, Nun Crane

Features:The white "head" is very conspicuous, and most of the body is gray-black, making it easy to identify.

The white-headed crane is a large wading bird with a long neck, beak, and legs. It is gentle, alert, and timid. It has a white gray coat and a snow-white neck. It migrates in spring from late March to late April and arrives at its breeding grounds in late April and early May. It migrates in autumn f...

Grus nigricollis

Grus nigricollis

Grus nigricollis,Black-necked Crane, Tibetan Crane, Grulla Cuellinegra,,Tibetan crane, wild goose, black goose, dry goose

Features:The only crane in the world that lives and breeds on the plateau. It is known as the "bird panda"

Black-necked cranes are large flying wading birds. Except for the breeding season, they often move in pairs, individuals or family groups. In other seasons, they move in groups, especially in winter in wintering grounds, often forming large groups of dozens of individuals. During the wintering, they...

Porphyrio indicus

Porphyrio indicus

Porphyrio indicus,Black-backed Swamphen,Rodhoue Purple Swamphen, Reunion White Dodo

Features:The whole body is covered with purple feathers, and it looks beautiful.

Purple moorhen is a bird of the family Raccoon of the order Gruiformes. It is purple in color and lives by the water all year round. It is of medium size, with a short tail and a very bright red crown on its head. It looks very similar to a domestic chicken, so it is named purple moorhen. However, t...

Great crested grebe (Podiceps cristatus)

Great crested grebe (Podiceps cristatus)

Features:The Great crested grebe is a medium-sized water bird with a slender,

Table of ContentsPhysical CharacteristicsHabitat and EnvironmentBehavior, Lifestyle, and DietDistribution, Migration Patterns, and HabitsReproduction, Parenting, and LifespanSubspecies and VariationsConservation StatusProtection LevelsPopulation TrendsPredatorsArt and Cultural SignificanceReferences...

Pelicans

Pelicans

Features:a group of large water birds. Known for their distinctive long bills and large, pouched throats

Table of ContentsPhysical CharacteristicsHabitat and EnvironmentBehavior, Lifestyle, and DietGeographic Distribution, Migration Routes, and HabitsReproduction, Parenting, and LifespanSubspecies and VariationsConservation StatusProtection LevelsPopulation TrendsPredators of PelicansArt and Cult...

Great Blue Heron (Ardea herodias)

Great Blue Heron (Ardea herodias)

Ardea herodias

Features:It is easily recognized by its bluish-gray plumage, long legs, and dagger-like yellow bill. The heron’s long, S-shaped neck

Species Scientific ClassificationThe Great Blue Heron (Ardea herodias) is classified as follows:Kingdom: AnimaliaPhylum: ChordataClass: AvesOrder: PelecaniformesFamily: ArdeidaeGenus: ArdeaSpecies: Ardea herodiasThis classification places the Great Blue Heron in the Ardeidae family, which includes v...