| Waders | ||||||||
|---|---|---|---|---|---|---|---|---|
| Dunlin Calidris alpina A calidrid wader | ||||||||
| Scientific classification | ||||||||
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| Families | ||||||||
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Charadridae Jacanidae Rostratulidae Ibidorhynchidae Recurvirostridae Haematopodidae Scolopacidae Dromadidae Burhinidae Glareolidae Thinocoridae |
Waders, called Shorebirds in North America, are members of the Charadriiformes order of birds, but excluding the more marine seabird web-footed groups, these being the skuas (Stercoraracidae), gulls (Laridae), terns (Sternidae), skimmers (Rhynchopidae), sheathbill Chionididae and auks (Alcidae).
This leaves about 210 species most, but not all, of which are associated with wetland or coastal environments. Many species of Arctic and temperate regions are strongly migratory, but tropical birds are often resident, or move only in response to rainfall patterns. Some of the Arctic species, such Little Stint[?] are amongst the longest distance migrants, wintering in the southern hemisphere
The majority of species eat small invertebrates picked out of the mud or soil. Different lengths of bills enable different species to feed in the same habitat, particularly on the coast, without direct competition for food.
Some larger species, particularly those adapted to drier habitats will take larger prey including insects and small reptiles. The pratincoles are aerial insect eaters, hunting like swallows.
Many of the smaller species found in coastal habitats, particularly but not exclusively the calidrids, are often named as "Sandpipers", but this term doesn't have a strict meaning, since the Upland Sandpiper is a grassland species.
The following shows the groups of Charadriiform birds normally classed as waders. The approximate number of species is in brackets.
Charadriiformes
- Lari. The gulls and their allies.
- Alcae. The auks.
- Charadrii: The waders.
- Jacanidae jacanas (8)
- Rostratulidae painted snipe (2)
- Haematopodidae oystercatchers (11)
- Ibidorhynchidae Ibisbill
- Recurvirostridae avocets and stilts
- Charadriidae plovers (67)
- Scolopacidae typical waders or shorebirds (88)
- Dromadidae Crab Plover (1)
- Burhinidae thick-knees (9)
- Glareolidae coursers and pratincoles (17)
- Thinocoridae seedsnipe (4)
The large family Scolopacidae is often further subdivided into groups of similar birds. These groups do not necessarily consist of a single genus. The groups are
- Godwits (4, all genus Limosa)
- Curlews (8, all genus Numenius)
- Upland Sandpiper[?] (1 genus Bartramia)
- Shanks and Tattlers[?] (16)
- Polynesian sandpipers (2)
- Turnstones (2, both genus Arenaria)
- Phalaropes (3, all genus Phalaropus)
- Woodcocks (6, all genus Scolopax)
- Snipe (16)
- Dowitchers (3, all genus Limnodromus)
- Calidrids and allies (25, of which 20 in genus Calidris )
In the Sibley-Ahlquist taxonomy, waders and many other groups are subsumed into a greatly enlarged order Ciconiiformes.
See also list of birds
Common misspelling and questions (FAQ)
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