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[[Image:Gadwall.jpg|thumb|550px|right|Photo by {{user|pauliev69|pauliev69}}]] | [[Image:Gadwall.jpg|thumb|550px|right|Photo by {{user|pauliev69|pauliev69}}]] | ||
;[[:Category:Anas|Anas]] strepera | ;[[:Category:Anas|Anas]] strepera | ||
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==Identification== | ==Identification== | ||
| + | 46-56 cm<br /> | ||
| + | *Yellowish-orange legs | ||
| + | *Small white patch on hind-wing | ||
| + | *White belly, visible in flight | ||
| + | '''Male''' | ||
| + | *Greyish body | ||
| + | *Noticeable vermiculations on breast | ||
| + | *Brownish tertials | ||
| + | *Black stern | ||
| + | '''Female''' | ||
| + | *Brown plumage, mottled and streaked | ||
| + | *Orange sides to bill | ||
| + | ====Similar Species==== | ||
| + | Female is easily confused with the slightly larger female [[Mallard]]. Look for white patch on hindwing and orange edges to the bill. | ||
==Distribution== | ==Distribution== | ||
| − | Breeding range very patchy and discontinuous in most of Europe. Scattered pockets in Iceland, the British Isles and in most Continental countries from western France to Russia where becomes more widespread and range is more continuous. Absent from Scandinavia, except a small part of east Sweden, and from much of the Mediterranean region but small numbers breed in Morocco and Iberia, Italy, the Balkans and Turkey. Some populations, as in Britain, are descended from introduced stock. Recently bred for the first time in the Channel Islands. Breeds widely across temperate Asia to northern China and may breed on Hokkaido. In North America breeds in central and southern Alaska, western and south-central Canada and the north-central and western USA south to California and Texas. | + | '''Breeding''' range very patchy and discontinuous in most of [[Europe]]. Scattered pockets in [[Iceland]], the [[British Isles]] and in most Continental countries from western [[France]] to [[Russia]] where it becomes more widespread and the range is more continuous. Absent from [[Scandinavia]], except a small part of east [[Sweden]], and from much of the Mediterranean region but small numbers breed in [[Morocco]] and [[Iberia]], [[Italy]], the Balkans and [[Turkey]]. Some populations, as in [[Britain]], are descended from introduced stock. Recently bred for the first time in the [[Channel Islands]]. Breeds widely across temperate [[Asia]] to northern [[China]] and may breed on Hokkaido. In [[North America]] breeds in central and southern [[Alaska]], western and south-central [[Canada]] and the north-central and western [[USA]] south to [[California]] and [[Texas]]. |
| + | |||
| + | '''Resident''' in much of western European range, except Icelandic birds which winter in Britain, but from central Europe to Asia mainly a summer visitor. In winter becomes more widespread in Britain, western Europe and around the Mediterranean. | ||
| − | + | '''Winters''' in small numbers in North [[Africa]], notably in [[Tunisia]] and in the Nile Valley, rarely south of the Sahara. [[North America|North American]] birds winter throughout southern half of USA and south to [[Guatemala]]. | |
[[Image:Gadwall 18 10 09.jpg|thumb|350px|right|Photo by {{user|markranner|markranner}}<br />Lincolnshire, England, October 2009]] | [[Image:Gadwall 18 10 09.jpg|thumb|350px|right|Photo by {{user|markranner|markranner}}<br />Lincolnshire, England, October 2009]] | ||
==Taxonomy== | ==Taxonomy== | ||
Sometimes placed in the genus ''Mareca''. | Sometimes placed in the genus ''Mareca''. | ||
| − | + | ====Subspecies<sup>[[#References|[1]]]</sup>==== | |
| + | *''A. s. strepera'': | ||
| + | :*Widespread [[Palearctic]] and [[Nearctic]] regions | ||
| + | *''A. s. couesi'': | ||
| + | :*Formerly Fanning Islands (central Pacific). Extinct ca 1874 | ||
==Habitat== | ==Habitat== | ||
| − | + | '''Breeding''': well vegetated swamps and lakes in open lowland areas.<br /> | |
| − | + | '''Non-breeding''': often on reservoirs and gravel pits, locally also on estuaries. | |
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==Behaviour== | ==Behaviour== | ||
| + | A fresh-water surface-feeding duck; very gregarious. | ||
| + | ==References== | ||
| + | #{{Ref-Clements6thDec09}}#Birdwatchers Pocket Guide ISBN 1-85732-804-3 | ||
| + | #Collins Pocket Guide to British Birds 1966 | ||
| + | #Collins Field Guide 5th Edition | ||
| + | {{ref}} | ||
==External Links== | ==External Links== | ||
| − | {{GSearch| | + | {{GSearch|Anas_strepera}} |
*[http://www.orientalbirdimages.org/birdimages.php?action=birdspecies&Bird_ID=215&Bird_Image_ID=707 View more images of this species on Orientalbirdimages] | *[http://www.orientalbirdimages.org/birdimages.php?action=birdspecies&Bird_ID=215&Bird_Image_ID=707 View more images of this species on Orientalbirdimages] | ||
[[Category:Birds]][[Category:Anas]] | [[Category:Birds]][[Category:Anas]] | ||
Revision as of 15:32, 6 March 2010
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This article is incomplete. This article is missing one or more sections. You can help the BirdForum Opus by expanding it. |
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- Anas strepera
Identification
46-56 cm
- Yellowish-orange legs
- Small white patch on hind-wing
- White belly, visible in flight
Male
- Greyish body
- Noticeable vermiculations on breast
- Brownish tertials
- Black stern
Female
- Brown plumage, mottled and streaked
- Orange sides to bill
Similar Species
Female is easily confused with the slightly larger female Mallard. Look for white patch on hindwing and orange edges to the bill.
Distribution
Breeding range very patchy and discontinuous in most of Europe. Scattered pockets in Iceland, the British Isles and in most Continental countries from western France to Russia where it becomes more widespread and the range is more continuous. Absent from Scandinavia, except a small part of east Sweden, and from much of the Mediterranean region but small numbers breed in Morocco and Iberia, Italy, the Balkans and Turkey. Some populations, as in Britain, are descended from introduced stock. Recently bred for the first time in the Channel Islands. Breeds widely across temperate Asia to northern China and may breed on Hokkaido. In North America breeds in central and southern Alaska, western and south-central Canada and the north-central and western USA south to California and Texas.
Resident in much of western European range, except Icelandic birds which winter in Britain, but from central Europe to Asia mainly a summer visitor. In winter becomes more widespread in Britain, western Europe and around the Mediterranean.
Winters in small numbers in North Africa, notably in Tunisia and in the Nile Valley, rarely south of the Sahara. North American birds winter throughout southern half of USA and south to Guatemala.
Taxonomy
Sometimes placed in the genus Mareca.
Subspecies[1]
- A. s. strepera:
- Widespread Palearctic and Nearctic regions
- A. s. couesi:
- Formerly Fanning Islands (central Pacific). Extinct ca 1874
Habitat
Breeding: well vegetated swamps and lakes in open lowland areas.
Non-breeding: often on reservoirs and gravel pits, locally also on estuaries.
Behaviour
A fresh-water surface-feeding duck; very gregarious.
References
- Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
- Birdwatchers Pocket Guide ISBN 1-85732-804-3
- Collins Pocket Guide to British Birds 1966
- Collins Field Guide 5th Edition
Recommended Citation
- BirdForum Opus contributors. (2024) Gadwall. In: BirdForum, the forum for wild birds and birding. Retrieved 29 April 2024 from https://www.birdforum.net/opus/Gadwall
