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m AWB general fixes and, delink dates per WP:DATELINK, WP:YEARLINK and MOS:UNLINKYEARS using AWB (8097)
IUCN version 2012.1, replaced: The '''Long-tailed Jaeger''', ''Stercorarius longicaudus'' → The '''Long-tailed Jaeger''' (''Stercorarius longicaudus'') using AWB (8414)
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| image =Long-tailed Skua (js) 26.jpg
| image =Long-tailed Skua (js) 26.jpg
| image size =230px
| image size =230px
| status = LC | status_system = IUCN3.1
| status = LC
| status_system = IUCN3.1
| status_ref = <ref>{{IUCN|id=106003202 |title=''Stercorarius longicaudus'' |assessors=[[BirdLife International]] |version=2012.1 |year=2012 |accessdate=16 July 2012}}</ref>
| regnum = [[Animal]]ia
| regnum = [[Animal]]ia
| phylum = [[Chordate|Chordata]]
| phylum = [[Chordate|Chordata]]
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}}
}}


The '''Long-tailed Jaeger''', ''Stercorarius longicaudus'' (known as the '''Long-tailed Skua''' outside the Americas) is a [[seabird]] in the [[skua]] family [[Stercorariidae]].
The '''Long-tailed Jaeger''' (''Stercorarius longicaudus'') (known as the '''Long-tailed Skua''' outside the Americas) is a [[seabird]] in the [[skua]] family [[Stercorariidae]].


This is the smallest of the skua family at {{convert|38|-|58|cm|in|abbr=on}}, depending on season and age. However, much of this, up to {{convert|29|cm|in|abbr=on}}, is comprised by the tail which may include the {{convert|15|cm|in|abbr=on}} tail streamers of the summer adult. The wingspan of this species ranges from {{convert|102|to|117|cm|in|abbr=on}} and the body mass is {{convert|230|-|444|g|oz|abbr=on}}.<ref name = "CRC">''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.</ref><ref>{{cite web|url=http://www.arkive.org/long-tailed-jaeger/stercorarius-longicaudus/ |title=Long-tailed jaeger videos, photos and facts - Stercorarius longicaudus |publisher=ARKive |date= |accessdate=2011-10-20}}</ref>
This is the smallest of the skua family at {{convert|38|-|58|cm|in|abbr=on}}, depending on season and age. However, much of this, up to {{convert|29|cm|in|abbr=on}}, is comprised by the tail which may include the {{convert|15|cm|in|abbr=on}} tail streamers of the summer adult. The wingspan of this species ranges from {{convert|102|to|117|cm|in|abbr=on}} and the body mass is {{convert|230|-|444|g|oz|abbr=on}}.<ref name = "CRC">''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.</ref><ref>{{cite web|url=http://www.arkive.org/long-tailed-jaeger/stercorarius-longicaudus/ |title=Long-tailed jaeger videos, photos and facts - Stercorarius longicaudus |publisher=ARKive |date= |accessdate=2011-10-20}}</ref>
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==References==<!-- FaunAbh26:63. -->
==References==<!-- FaunAbh26:63. -->
{{reflist}}
{{reflist}}
* {{IUCN2006|assessors=BirdLife International|year=2004|id=49208|title=Stercorarius longicaudus|downloaded=11 May 2006}} Database entry includes justification for why this species is of least concern
* {{cite book | last = Harrison | first = Peter | title = Seabirds of the World | year = 1996 | publisher = Princeton University Press | location=Princeton | isbn = 0-691-01551-1}}
* {{cite book | last = Harrison | first = Peter | title = Seabirds of the World | year = 1996 | publisher = Princeton University Press | location=Princeton | isbn = 0-691-01551-1}}
* {{cite book | last = Bull | first = John | coauthors = Farrand, Jr., John | title = The Audubon Society Field Guide to North American Birds, Eastern Region | year = 1984 | month = April | publisher = Alfred A. Knopf | location=New York | isbn = 0-394-41405-5 }}
* {{cite book | last = Bull | first = John | coauthors = Farrand, Jr., John | title = The Audubon Society Field Guide to North American Birds, Eastern Region | year = 1984 | month = April | publisher = Alfred A. Knopf | location=New York | isbn = 0-394-41405-5 }}

Revision as of 18:17, 1 October 2012

Long-tailed jaeger
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Aves
Order:
Charadriiformes
Family:
Stercorariidae
Genus:
Stercorarius
Species:
S. longicaudus
Binomial name
Stercorarius longicaudus
(Vieillot, 1819)

The Long-tailed Jaeger (Stercorarius longicaudus) (known as the Long-tailed Skua outside the Americas) is a seabird in the skua family Stercorariidae.

This is the smallest of the skua family at 38–58 cm (15–23 in), depending on season and age. However, much of this, up to 29 cm (11 in), is comprised by the tail which may include the 15 cm (5.9 in) tail streamers of the summer adult. The wingspan of this species ranges from 102 to 117 cm (40 to 46 in) and the body mass is 230–444 g (8.1–15.7 oz).[2][3]

This species breeds in the high Arctic of Eurasia and North America, with major populations in Russia, Alaska and Canada and smaller populations around the rest of the Arctic. It is a migrant, wintering in the south Atlantic and Pacific. Passage juvenile birds sometimes hunt small prey in ploughed fields or golf-courses, and are typically quite fearless of humans.

Long-tailed Skua in flight

They nest on dry tundra or higher fells laying two spotted olive-brown eggs. On the breeding grounds they can be heard making yelping and rattling sounds. Outside of the breeding season they spend most of their time over open ocean and have a harsh kreeah cry. This bird feeds on fish (mainly caught from other seabirds), small birds, scraps, small mammals and carrion. On migration, Long-tailed Jaegers are more likely to catch their own food, and less likely to steal from gulls and terns than larger species.

This species is unmistakable as an adult, with grey back, dark primary wing feathers without a white "flash", black cap and very long tail. Adults often hover over their breeding territories. Juveniles are much more problematic, and are difficult to separate from Parasitic Jaeger over the sea. They are slimmer, longer-winged and more tern-like than that species, but show the same wide range of plumage variation. However, they are usually colder toned than Arctic, with greyer shades, rather than brown.

Long-tailed Jaeger

References

  1. ^ Template:IUCN
  2. ^ CRC Handbook of Avian Body Masses by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.
  3. ^ "Long-tailed jaeger videos, photos and facts - Stercorarius longicaudus". ARKive. Retrieved 2011-10-20.
  • Harrison, Peter (1996). Seabirds of the World. Princeton: Princeton University Press. ISBN 0-691-01551-1.
  • Bull, John (1984). The Audubon Society Field Guide to North American Birds, Eastern Region. New York: Alfred A. Knopf. ISBN 0-394-41405-5. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |month= ignored (help)
Quelle: https://en.wikipedia.org/wiki/Special%3ADiff%2F515500360