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- Thayer's_Gull abstract "Thayer's Gull (Larus thayeri) is a large gull native to North America that breeds in the Arctic islands of Canada and winters primarily on the Pacific coast, from southern Alaska to the Gulf of California, though there are also wintering populations on the Great Lakes and the upper Mississippi River. The species has occurred as a vagrant to Tamaulipas, Mexico, Japan, Denmark, and other parts of western Europe.Somewhat intermediate between American Herring Gull and Iceland Gull in habit and appearance and at times considered conspecific with either species, the adult Thayer's Gull in nonbreeding plumage has a pale gray mantle, with obvious blackish wingtips, and extensive brown streaking on the head and neck. The head, neck, breast, belly, and underwings are primarily white, and the legs are pink. There is a red spot on the lower mandible, and the color of the iris is generally dark. In summer, the head and neck are white, with the bill turning bright yellow with a larger red spot on the lower mandible. Juvenile gulls are brown, with black bills, and black legs which quickly fade to adult pink. Thayer's Gull reaches a length of 56 to 64 cm (22 to 25 in), with a wingspan of 130 to 148 cm (51 to 58 in) and a weight of approximately 720 to 1,500 g (1.59 to 3.31 lb). Males average around 1,093 g (2.410 lb) and females, being slightly smaller, average 900 g (2.0 lb). Among standard measurements, the wing chord is 38.4 to 44.2 cm (15.1 to 17.4 in), the bill is 4.4 to 5.5 cm (1.7 to 2.2 in) and the tarsus is 5.2 to 6.9 cm (2.0 to 2.7 in).During winter, it is found in small numbers among mixed flocks of large gulls, though it may gather in large numbers in certain locations. In summer, it is found on the tundra of high Arctic islands. These gulls with lay 3 bluish or greenish eggs in nests lined with grass, moss or lichens. Their voice consists of mostly mewing and squealing notes.There is continuing debate about the taxonomic status of this species, and some authorities consider Thayer's Gull to be the dark-mantled form of Iceland Gull, with Kumlien's Gull (variously treated as a subspecies of either Thayer's or Iceland Gulls) as an intermediate example, forming a cline rather than separate species. The American Ornithologists' Union considered Thayer's Gull a subspecies of American Herring Gull from 1917 until 1973, when they determined it was a separate species from Herring Gull. While numerous papers have since been written suggesting downgrading this species to a subspecies or even a morph of Iceland Gull, the AOU as well as all North American field guides continue to treat Thayer's Gull as a separate species. The British Ornithologists' Union follows the publication Birds of North America in lumping the three as forms of Iceland Gull.Both the common and species names honor ornithologist John Eliot Thayer, and so the first part of its name is pronounced "THAY-erz".".
- Thayer's_Gull binomialAuthority Buchanan_Bay.
- Thayer's_Gull binomialAuthority Ellesmere_Island.
- Thayer's_Gull binomialAuthority Winthrop_Sprague_Brooks.
- Thayer's_Gull class Bird.
- Thayer's_Gull conservationStatus "LC".
- Thayer's_Gull conservationStatusSystem "IUCN3.1".
- Thayer's_Gull family Gull.
- Thayer's_Gull genus Larus.
- Thayer's_Gull kingdom Animal.
- Thayer's_Gull order Charadriiformes.
- Thayer's_Gull phylum Chordate.
- Thayer's_Gull synonym "Larus glaucoides thayeri".
- Thayer's_Gull thumbnail THGUc.jpg?width=300.
- Thayer's_Gull wikiPageExternalLink avibase.jsp?pg=summary&lang=EN&id=A38303EC1A8585E6&ts=1142010976304.
- Thayer's_Gull wikiPageExternalLink show_flash_card.asp?recordNumber=BD0622.
- Thayer's_Gull wikiPageExternalLink ?w=42637302@N00&q=Thayer%27s+Gull&m=pool.
- Thayer's_Gull wikiPageExternalLink h0518id.html.
- Thayer's_Gull wikiPageExternalLink ThayersOFO.htm.
- Thayer's_Gull wikiPageID "4344590".
- Thayer's_Gull wikiPageRevisionID "593145560".
- Thayer's_Gull accessdate "2006-03-10".
- Thayer's_Gull binomial "Larus thayeri".
- Thayer's_Gull binomialAuthority "WS Brooks, 1915, Buchanan Bay, Ellesmere Island".
- Thayer's_Gull classis Bird.
- Thayer's_Gull familia Gull.
- Thayer's_Gull genus "Larus".
- Thayer's_Gull hasPhotoCollection Thayer's_Gull.
- Thayer's_Gull id "176828".
- Thayer's_Gull imageWidth "256".
- Thayer's_Gull name "Thayer's Gull".
- Thayer's_Gull ordo Charadriiformes.
- Thayer's_Gull phylum Chordate.
- Thayer's_Gull regnum "Animalia".
- Thayer's_Gull species "L. thayeri".
- Thayer's_Gull status "LC".
- Thayer's_Gull statusSystem "IUCN3.1".
- Thayer's_Gull synonyms "Larus glaucoides thayeri".
- Thayer's_Gull taxon "Larus thayeri".
- Thayer's_Gull subject Category:Birds_of_North_America.
- Thayer's_Gull subject Category:Birds_of_the_Sea_of_Cortez.
- Thayer's_Gull subject Category:Larus.
- Thayer's_Gull subject Category:Western_North_American_migratory_birds.
- Thayer's_Gull type Animal100015388.
- Thayer's_Gull type Bird101503061.
- Thayer's_Gull type BirdsOfNorthAmerica.
- Thayer's_Gull type BirdsOfTheSeaOfCortez.
- Thayer's_Gull type Chordate101466257.
- Thayer's_Gull type LivingThing100004258.
- Thayer's_Gull type Object100002684.
- Thayer's_Gull type Organism100004475.
- Thayer's_Gull type PhysicalEntity100001930.
- Thayer's_Gull type Vertebrate101471682.
- Thayer's_Gull type WesternNorthAmericanMigratoryBirds.
- Thayer's_Gull type Whole100003553.
- Thayer's_Gull type Animal.
- Thayer's_Gull type Bird.
- Thayer's_Gull type Eukaryote.
- Thayer's_Gull type Species.
- Thayer's_Gull type Animal.
- Thayer's_Gull type Bird.
- Thayer's_Gull type Organism.
- Thayer's_Gull comment "Thayer's Gull (Larus thayeri) is a large gull native to North America that breeds in the Arctic islands of Canada and winters primarily on the Pacific coast, from southern Alaska to the Gulf of California, though there are also wintering populations on the Great Lakes and the upper Mississippi River.".
- Thayer's_Gull label "Thayer's Gull".
- Thayer's_Gull sameAs HtMif.
- Thayer's_Gull sameAs m.0by74r.
- Thayer's_Gull sameAs Thayer's_Gull.
- Thayer's_Gull wasDerivedFrom Thayer's_Gull?oldid=593145560.
- Thayer's_Gull depiction THGUc.jpg.
- Thayer's_Gull isPrimaryTopicOf Thayer's_Gull.
- Thayer's_Gull name "Thayer's Gull".