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Clangula hyemalis

(southerly old squaw)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Dutch:

IJseend

Common Names in English:

calloo, cockawee, coween, Hound, John Connolly, long-tail, Long-tailed Duck, Long-tailled Duck, old Billy, old granny, old injun, old molly, old squaw, Old wife, oldsquaw, quandy, scoldenore, scolder, south-southerly, southerly old squaw, squeaking duck, swallow-tailed duck, uncle Huldy, winter duck

Common Names in French:

Harelde boréale, Harelde de Miquelon, harelde kakawi

Common Names in German:

Eisente

Common Names in Hebrew:

ברווז קרח

Common Names in Italian:

Moretta codona

Common Names in Japanese:

コオリガモ

Common Names in Russian:

Moryanka, Морянка

Common Names in Spanish:

Havelda, Pato cola larga, Pato Havelda

Common Names in Swedish:

Alfågel

Description

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Physical Description

Adult Female: Head : dark Face : Postocular Stripe : whitish Bill: gray Length : short Body: Underparts: white Upperparts: dark.Adult Male: Face: Eyebrow Line : brownish black with pale patch Bill: black with pinkish ring Length: short Body: Sides: white Legs : Femorals: white Tail: black Length: long.

Color:

Adult male alternate: Plumage worn in Spring and Summer · Very long, black, central tail feathers · Black head , neck, chest, and back · Large white patch on the head around the eye · White flanks, belly and undertail coverts · Pinkish bill

Adult male basic: Plumage worn in Fall and Winter · Very long, black, central tail feathers · White crown, neck, back, flanks, and belly · Black chest and lower back · Gray face patch · Black bill with pale near tip

Immature male: Short, black, central tail feathers · White head and neck with dark crown and face patch · Gray chest and back · Whitish flanks and belly · Black bill with pale near tip

Adult female winter: White head and neck with dark crown and face patch · Gray back · White flanks and belly · Pale bill · Plumage somewhat darker in summer

Size/Age/Growth

About 15 to 22 inches long, with a wingspan of 26 to 31 inches. Adults weigh about 33.6 ounces .

Habitat

Typically found in a lake at a mean distance from sea level of 56 meters (183 feet).[1]

Ecology: Behaviour This species is fully migratory1 although its movements are poorly understood5. It breeds from late-May onwards3 in single pairs or loose groups1, 2, the males leaving the females soon after the start of incubation3 (between late-June and early-September) to gather in small flocks for a flightless moulting period5. Some populations undergo extensive moult migrations of up to 1,000 km , while others moult on waters near the breeding grounds3. Females moult between early-August and early-October on the breeding grounds5, often abandoning their young at the start of the moult (the ducklings then gather into large parentless groups)4. The southward autumn migration occurs from September to October after the post-breeding moult5 and non-breeders may oversummer in the wintering areas3. Outside of the breeding season the species is highly gregarious4, in winter gathering into large aggregations of perhaps several tens of thousands of individuals to roost or to feed in inshore and offshore waters1. The species regularly dives to depths of 3-10 m when foraging (maximum depth 50-60 m)2 and is diurnal2. Habitat Breeding The species breeds on marshy grass tundra in the high Arctic1, 6, especially where habitat mosaics are formed by hummocks and ridges together with moist depressions7, freshwater lakes1, 2, bogs1, slow rivers1, 3 or pools of standing water7. It generally avoids wooded tundra4, 7 but is common among willows or dwarf birch in the arctic-alpine zone (Scandinavia)7. The species also breeds on small rocky islands off mainland Arctic coasts and on larger offshore islands, using promontories, deltas7, coastal inlets1, 3 and islets in fjords (Greenland)7. Non-breeding The species winters at sea , generally far offshore1 in waters 10-35 m deep5, as well as in saline, brackish or fresh estuarine waters4, brackish lagoons1, and inland (very rarely) on large, deep freshwater lakes1. Diet The species showing a preference for marine foods during both the breeding and non-breeding seasons4, its diet consisting predominantly of animal matter7 such as crustaceans1 (e.g. amphipods2 and cladocerans4), molluscs , other marine invertebrates (e.g. echinoderms , worms) and fish1. The species also takes freshwater insects and insect larvae1 as well as plant material such as algae, grasses, and the seeds and fruits of tundra plants1. Breeding site The nest is a natural depression on dry ground positioned in the open, amongst vegetation1, partially hidden by overhanging boulders3 or under low shrubs4 (e.g. willows or dwarf birch)6 usually close to water3. Although it is not a colonial species some pairs may nest in loose groups, and the species may also nest in association with Artic Terns2.

[2].

List of Habitats:

Biology

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Diet

Mostly aquatic invertebrates and fish, with some plant matter.

Reproduction

Migration

Migratory

Taxonomy

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Synonyms

Clangula hyemalis (Linnaeus, 1758)

Notes

Name Status: Accepted Name .

Last scrutiny: 23-Jan-2007

Similar Species

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Northern Pintail

Members of the genus Clangula

ZipcodeZoo has pages for 1 species and subspecies in this genus:

C. hyemalis (Swallow-Tailed Duck)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 12, 2007:

Identifiers

Footnotes

  1. Standard Deviation = 228.650 based on 20,000 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  2. BirdLife International 2011. Clangula hyemalis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 31 January 2012. [back]
Last Revised: 7/14/2012