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Topic: Pomarine Jaeger


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In the News (Wed 30 Dec 09)

  
  AllRefer.com - jaeger (Vertebrate Zoology) - Encyclopedia
Jaegers and skuas are stocky, powerfully muscled birds with long, pointed wings, long tails, strong, hooked bills, and sharp, curved talons.
Jaegers and skuas rob the food of their smaller relatives, teasing and harassing them until they drop their prey.
Of the three jaegers (Stercorarius species), all of northern oceans, the largest is the pomarine jaeger (also called jiddy hawk), the most common the parasitic jaeger, and the most graceful the long-tailed jaeger.
reference.allrefer.com /encyclopedia/J/jaeger.html   (300 words)

  
 Wiley and Lee 2000   (Site not responding. Last check: 2007-10-29)
The name "pomarine" is based on the scientific name, proposed in 1815 by C. Temminck, from Greek roots meaning "lid-nosed", a reference to the saddle-like sheath covering the base of the upper bill in all species of jaegers.
Pomarine Jaegers are perhaps unique among birds in their dependence on a single species of prey for successful reproduction.
The Pomarine's methods of parasitism are less elegant than those of the smaller jaegers; they often rely on surprise and brute force to tackle shearwaters and gulls feeding on the water rather than on acrobatics in flight.
www.unc.edu /~rhwiley/refsj/pojaintro.html   (506 words)

  
 NESTING BY POMARINE JAEGERS NEAR BARROW, ALASKA, 1971
Thus, nesting attempts of Pomarine Jaegers over the years considered here range from zero to a high of 7.9 pairs km -2, reflecting abundance of their primary prey, the Brown Lemming, at the onset of the season.
For example, jaegers nested near Barrow in 1956 and not in 1957, while at Wain- wright, 130 km to the southwest of Barrow, they were absent in 1956, and nested in 1957.
Ecology of Pomarine, Parasitic, and Long-tailed Jaegers in northern Alas- ka.
elibrary.unm.edu /sora/JFO/v058n02/p0225-p0230.html   (2960 words)

  
 Skuas and Jaegers
Pomarine and Parasitic Jaegers, and South Polar Skua, come in dark and light morphs, and there are good numbers of each.
The Pomarine Jaeger shown above is a dark morph; the Parasitic Jaeger at the top of the page is a light morph (dark breastband on white underparts is a typical pattern).
Jaegers typically do not breed until 3 years old, and the larger skuas not until they are 5-6 years of age (Furness 1996, Olsen and Larsson 1997).
montereybay.com /creagrus/skuas.html   (1352 words)

  
 Marine Birds - Pomarine Jaeger   (Site not responding. Last check: 2007-10-29)
The pomarine jaeger has a circumpolar range, being absent only from parts of northeastern Canada and Greenland.
Pomarine jaegers defend a large nesting territory and the parents share egg incubation duties for four weeks.
The pomarine jaeger is the most versatile feeder of all the jaegers, usually catching its own prey of lemmings and other rodents, but it will also parasitize other birds if resources are scarce.
www.arctic.uoguelph.ca /cpl/organisms/birds/marine/gulls/pomarine.htm   (194 words)

  
 Pomarine Jaeger Light
Pomarine Jaeger Light: Large jaeger with entirely dark brown plumage except for white patches near underwing tips and on sides of undertail.
Pomarine Jaeger: Two olive to brown eggs with dark brown blotches are laid in a shallow depression on the ground laid with plant material.
Pomarine Jaeger: Similar to this bird is Parasitic Jaeger which is smaller, more slender, with smaller bill and two central tail feathers extended and pointed but not twisted.
identify.whatbird.com /obj/495/_/Pomarine_Jaeger_Light.aspx   (697 words)

  
 Separation of South Polar Skua from dark Pomarine Jaeger
Pomarine Jaeger wings are narrower, appearing longer, and are often angled.
Jaegers tend to have the body deep-chested and clearly tapered to the rear.
The tail of Pomarine Jaeger is relatively long and narrow.
www.sibleyguides.com /skua_vs_poja.htm   (680 words)

  
 Nearctica - Natural History - Birds of Eastern North America - Laridae - Pomarine Jaeger (Stercorarius pomarinus)
Habitat: The Pomarine Jaeger breeds in swampy tundra.
The Pomarine Jaeger, like the other jaegers will also harass gulls forcing them to drop any food they might be carrying.
The species spends most of its time at sea except during the breeding season and is seldom seen except from boats on the open ocean.
www.nearctica.com /birds/gulls/Spomar.htm   (300 words)

  
 Birds of Nova Scotia - Pomarine Jaeger   (Site not responding. Last check: 2007-10-29)
However, Pomarine Jaegers, the two other jaeger species and the Great Skua have been reported regularly over the past 15 years.
In spring, Pomarine Jaegers usually reach Nova Scotian waters at the end of April (earliest 18 April 1984).
Remarks Jaegers are freebooters of the open sea, preying on other forms of marine birdlife; they are known to fishermen as "sea hawks." This plucky member of the jaeger subfamily has been known to attack the much larger Great Black-backed Gull and successfully steal its prey.
museum.gov.ns.ca /mnh/nature/nsbirds/bns0164.htm   (303 words)

  
 Birds of the Upper Texas Coast - Jaegers   (Site not responding. Last check: 2007-10-29)
A successful stratagy used by many to find Jaegers is watch for a shrimp boat working close to shore with a large flock of gulls.
Pomarine Jaegers are larger than Parasitic, about the size of a Herring Gull.
Jaegers breed on the high tundra and winter at sea.
www.texasbirding.net /birds/jaegers.htm   (235 words)

  
 Parasitic Jaeger Light
Parasitic Jaeger: Two brown to green eggs with brown spots are laid in a shallow depression in the ground lined with plant material.
Parasitic Jaeger: Hunt small and medium-sized birds (including longspurs, sandpipers, and juvenile ducks and ptarmigans), birds' eggs (including those of gulls, geese, loons, and alcids), insects, fish, rodents, and carrion.
Pomarine Jaeger is much bigger and bulkier, almost skua-like, and has a thick bill with a prominent gonydeal angle.
identify.whatbird.com /obj/492/_/Parasitic_Jaeger_Light.aspx   (837 words)

  
 THE OTTER SIDE - Jaeger/Gull/Tern/etc. Images
Pomarine Jaegers occur along the northern coasts of North America, Europe, and Asia.
This immature Pomarine Jaeger was photographed as it soared alongside the boat on a pelagic trip out of Montauk, Long Island in New York.
This adult Pomarine Jaeger, showing the "spoon" shaped tail feathers characteristic of this species, was photographed as it soared alongside the boat on a pelagic trip out of Montauk, Long Island in New York.
www.otterside.com /htmfiles/gull9.htm   (354 words)

  
 LOS NEWS/NO. 182 - SEPTEMBER 1998
Despite all the published treatments of the problem, jaeger ID continues as one of the foremost challenges for US birders, especially along the Gulf Coast where it is difficult to gain experience because jaegers are generally few and far between, and where even fewer individuals allow close, leisurely studies.
Jaegers are generally inaccessible, and only one species, the Pomarine Jaeger, is currently regular in Louisiana in any numbers.
Pomarine Jaeger appears to be an uncommon spring and fall transient, and winter resident offshore.
www.losbird.org /los_news_182_98sept.htm   (9337 words)

  
 First Pomarine Jaeger Specimen from Brazil   (Site not responding. Last check: 2007-10-29)
Its measurements are: wing chord 343 mm, tail 150, exposed culmen 37.5, gonys 10.5, tarsus 58, middle toe with claw 55, and middle toe without claw 47.
In the western Atlantic Ocean, the Pomafine Jaeger, which breeds generally within the Arctic Circle, winters at sea regularly from Cape Hatteras south to the Caribbean with straggling specimen records to Venezuela (Phelps and Phelps, 1958: 109-110) and Guyana (Chubb, 1916: 96-97).
Wynne-Edwards (1935) suggests that Pomarine Jaegers from the American side of the Atlantic may possibly cross the Isthmus of Panama (where there are few records (Wetmore, 1965: 436)) to winter in the Humboldt current.
elibrary.unm.edu /sora/Auk/v089n03/p0663-p0665.html   (1708 words)

  
 Skua
The smaller skuas are called jaegers in North America.
The skuas are often split into two genera with only the smaller species retained in Stercorarius, and the large species transferred to Catharacta, but there is no real genetic basis for this separation.
Pomarine Skua is in fact more closely related to Great Skua than it is to either Arctic or Long-tailed Skuas.
www.brainyencyclopedia.com /encyclopedia/s/sk/skua.html   (247 words)

  
 jaeger on Encyclopedia.com   (Site not responding. Last check: 2007-10-29)
Jody Jaeger at ETV: muscling the agency into larger role.
City: Jaeger fashions a new look Recent management turbulence has left Jaeger out of touch.
Dan Jaeger, of Chicago, practices Vietnamese phrases with a group of children from Nam Cuong village in Vietnam during a kayaking trip.
www.encyclopedia.com /html/j1/jaeger.asp   (585 words)

  
 Pomarine skua - The Royal Society for the Protection of Birds   (Site not responding. Last check: 2007-10-29)
Pomarine skua - The Royal Society for the Protection of Birds
The pomarine skua is a large seabird, nearly as big as a herring gull.
There are two colour forms: dark - birds are all dark brown with small white flashes on the wings; light - birds have a pale breast and a dark cap on their heads.
www.rspb.org.uk /birds/guide/p/pomarineskua/index.asp   (173 words)

  
 Van Wagner's Beach   (Site not responding. Last check: 2007-10-29)
To help with jaeger identification, the best way to start is to decide between a Long-tailed Jaeger and Pomarine Jaeger.
This bird, a juvenile jaeger, flying down the shore appeared to be fairly delicate, not with a thick body and deep wingflaps of a larger jaeger like a Pomarine.
Almost all juvenile Parasitic Jaegers in either light or intermediate morph would show this, whereas juvenile Long-tailed Jaegers are usually marked with white and either fl/brown or grey (or a combination of these colours).
www.ofo.ca /photos/vanwagner/holden   (378 words)

  
 B-Mail(sm): ID-FRONTIERS for July 6-12, 2003
Caveats aside, this bird looks like a 1st summer Pomarine Jaeger to me. The bill is a bit thick, and the goynedal angle a bit more pronounced than on a typical Parasitic, but not completely outsized.
Maybe this jaeger is such a beast, which may also contribute to it being in the transition zone between the major wintering grounds and the breeding grounds in late June.
In Pomarine Skua, the rear end usually looks shorter than the width of the wings to me (which may recall Great Skua/Bonxie to an extent), giving the bird a rather front- heavy appearance (again reinforced by the large head and bulky breast).
www.virtualbirder.com /bmail/idfrontiers/200307/w2   (6802 words)

  
 New England Seabirds - Pomarine Jaeger
This is probably the reason that Pomarine Jaegers do not nest in the same spot year after year and do not mate for life.
Male Pomarine Jaegers wander the breeding territory searching for a spot with adequate Lemmings.
Another photo of the same Pomarine Jaeger taken by Steve Mirick on the 2000 Cashes Ledge trip.
www.neseabirds.com /jaegerpom.htm   (284 words)

  
 New England Seabirds - Results Seawatch Winter 2001 -2002
The Pomarine Jaeger total represents a new MA December high count.
I had not seen a single tubenose, no jaegers, and only a handful of kittiwakes until 10:30 or 11:00 when the wind quickly turned to the NE and increased markedly.
Oldsquaw (62) Red-breasted Merganser (256) Pomarine Jaeger (10): Incl.
www.neseabirds.com /seawatch2002.htm   (5366 words)

  
 Birds of Nova Scotia - Long-tailed Jaeger   (Site not responding. Last check: 2007-10-29)
In colouration, it is hardly distinguishable from the two preceding jaegers (see Pomarine Jaeger for description).
The very long tail feathers of the adult are narrow and attenuated, instead of broad and twisted as in the Pomarine, and project well beyond the tail, instead of only a little way as in the Parasitic.
Remarks The breeding of the Long-tailed Jaeger on arctic tundra is closely related to the abundance of lemmings and mice, its principal summer food.
museum.gov.ns.ca /mnh/nature/nsbirds/bns0166.htm   (368 words)

  
 Bird Quiz Answer 6 ~ American Birding Association
Jaegers and skuas are a notoriously difficult group of birds to identify.
While jaegers are exceedingly variable, a jaeger that that appears this rusty on the upperparts is usually a Parasitic.
Pomarine Jaegers only rarely have pale tips to the primaries (Olsen and Larsson).
www.americanbirding.org /photoquiz/quizans6.html   (824 words)

  
 The Columbia Encyclopedia, Sixth Edition: jaeger@ HighBeam Research   (Site not responding. Last check: 2007-10-29)
JAEGER [jaeger], common name for several members of the family Stercorariidae, member of a family of hawklike sea birds closely related to the gull and the tern.
Byline: Ken Robison THE FRESNO BEE Brett Jaeger didn't fret when he was released at the...
TORSTEN BLACKWOOD Agence France Presse 10-30-2003 Tom Jaeger (L) admires the giant steel bull "Taurus" by Scottish artist Andrew Scott near Sydney's Bondi Beach during the opening of the annual...
www.highbeam.com /ref/doc0.asp?docid=1E1:jaeger   (663 words)

  
 Jaegers
A An Autumn 1976 Jaeger Invasion in Duluth
N Parasitic Jaegers on Lake of the Woods
N Sabine's Gull and Jaeger on Lake of the Woods
biosci.cbs.umn.edu /~mou/loon/11jaegers.html   (205 words)

  
 BBC Pelagic Birding Results 2000   (Site not responding. Last check: 2007-10-29)
The last whale of the day was identified as Salt the first whale named and an animal that has a 27 year history of scientific research with her latest calf.
The 2 hour ride northeast to the GM banks recorded 8 or 9 jaegers, most of which were Pomarine, 1 Parasitic, and a few unidentified large Jaeger sp, most flying south.
Best show of the day was the Pomarine Jaeger which flew over the boat, around the boat and sat on the water very close for a great photo op.
members.aol.com /BBCPelagic/2000results.htm   (2898 words)

  
 Seabird News - September 2002   (Site not responding. Last check: 2007-10-29)
Pomarine Jaegers were streaming by as we made our way out, with a total of over 80 birds in all stages of molt, and color morph.
Several Parasitic Jaegers were harassing California Gulls in the early part of the trip, and even a Sabine’s Gull and Northern Fulmar were seen roughly 4-5 miles from shore.
An adult Pomarine Jaeger with full spoons flew in to the chum, and soon a Parasitic with full forks followed.
www.oceanwanderers.com /SeabirdNewsSept2002.html   (4639 words)

  
 MBRC Annual Summaries   (Site not responding. Last check: 2007-10-29)
The identification was based largely on the size comparison with the Ring-billed Gull; the observer also felt that the combination of "a mostly uniform dark head and conspicuous whitish barring on the rump and undertail" strongly suggests a Pomarine Jaeger.
Immature Long-tailed Jaeger may also show a similar extension of the central retrices, but this species is substantially smaller than a Ring-billed Gull.
This record was presented to the Committee as a Pomarine Jaeger at the request of the observer in order to repudiate an appearance of this sighting in print (LeBaron 1997) as a Pomarine Jaeger.
www.umd.umich.edu /dept/rouge_river/1999Report.html   (6410 words)

  
 MBRC Annual Summaries   (Site not responding. Last check: 2007-10-29)
Members were disturbed partly by the fact that there was no discussion of just how much larger than the Parasitic Jaegers this bird was, and more generally by the brief and sketchy description of the plumage.
One member stated that he was "not convinced that a young Long-tailed Jaeger couldn't give the impression of squarish central tail feathers.
The primary concern of some of the members of the Committee was the lack of note in the description of the most decisive field marks for Long-tailed Jaeger.
www.umd.umich.edu /dept/rouge_river/1997rept.html   (5416 words)

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