Information about Laughing Gull

Laughing Gull
Enlarge picture
Laughing Gull midflight

Laughing Gull midflight
Conservation status
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Charadriiformes
Family:Laridae
Genus:Larus
Species:L. atricilla
Binomial name
Larus atricilla
Linnaeus, 1758, Bahamas
The Laughing Gull, Larus atricilla, is a medium-sized gull of North and South America. It breeds on the Atlantic coast of North America, the Caribbean, southern California, USA, and northern South America. Northernmost populations migrate further south in winter, and this species occurs as a rare vagrant to western Europe, although there was a large influx into North-west Europe in late October 2005 when there was a minimum of 18 (and anywhere up to a possibly maximum of 35) individuals on one day in the UK alone. The Laughing Gull's English name is derived from its raucous kee-agh call, which sounds like a high pitched laugh "ha... ha... ha...".

This species is easy to identify. It is 36-41 cm long with a 98-110 cm wingspan. The summer adult's body is white apart from the dark grey back and wings and black head. Its wings are much darker grey than all other gulls of similar size except the smaller Franklin's Gull, and they have black tips without the white crescent shown by Franklin's. The bill is long and red. The black hood is mostly lost in winter.

Laughing Gulls take three years to reach adult plumage. Immature birds are always darker than most similar sized gulls other than Franklin's. First year birds are greyer below and have paler heads than first year Franklin's, and second years can be distinguished on the wing pattern and structure.

Laughing Gulls breed in coastal marshes and ponds in large colonies. The large nest, made largely from grasses, is constructed on the ground. The 3 or 4 greenish eggs are incubated for about three weeks. These are omnivores like most Larus gulls, and they will scavenge as well as seeking suitable small prey.



Adult in mid-May

First winter

Adult winter

Juvenile

Adult at St. Thomas, Virgin Islands

Vagrant in winter plumage in the UK in late 2005


References and External Links

conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. Many factors are taken into account when assessing the conservation status of a species: not simply the number remaining, but the
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Least Concern (LC) is an IUCN category assigned to extant species or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, nor Near Threatened, nor (prior to 2001) Conservation Dependent.
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885

Typical Classes

See below

Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Aves
Linnaeus, 1758

Orders

About two dozen - see section below

Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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Charadriiformes
Huxley, 1867

Families

Scolopacidae
Rostratulidae
Jacanidae
Thinocoridae
Pedionomidae
Laridae
Rhynchopidae
Sternidae
Alcidae
Stercorariidae
Glareolidae
Dromadidae
Turnicidae
Burhinidae
Chionididae
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Laridae
Vigors, 1825

Genera

Larus
Rissa
Pagophila
Rhodostethia
Xema
Creagus

Gulls are birds in the family Laridae.
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Larus
Linnaeus, 1758

Species

Many, see list

Larus is a large genus of seabirds to which most gulls belong. It has a world-wide distribution, and many of its species are abundant and well-known birds in their ranges.
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binomial nomenclature is the formal system of naming species. The system is also called binominal nomenclature (particularly in zoological circles), binary nomenclature (particularly in botanical circles), or the binomial classification system.
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Carolus Linnaeus (Carl von Linné)

Carl von Linné, Alexander Roslin, 1775. Currently owned by and hanging at the Royal Swedish Academy of Sciences.
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8th century - 9th century - 10th century
850s  860s  870s  - 880s -  890s  900s  910s
885 886 887 - 888 - 889 890 891

:
Subjects:     Archaeology - Architecture -
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Motto
"Forward, Upward, Onward Together"
Anthem
"March On, Bahamaland"
Royal anthem
"God Save the Queen"
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Laridae
Vigors, 1825

Genera

Larus
Rissa
Pagophila
Rhodostethia
Xema
Creagus

Gulls are birds in the family Laridae.
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North America is a continent [1] in the Earth's northern hemisphere and (chiefly) western hemisphere. It is bordered on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the southeast by the Caribbean Sea, and on the south and west
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South America is a continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere. It is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie
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Caribbean (Dutch: Cariben or Caraïben, or more commonly Antillen; French: Caraïbe or more commonly Antilles; Spanish: Caribe
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Motto
"In God We Trust"   (since 1956)
"E Pluribus Unum"   ("From Many, One"; Latin, traditional)
Anthem
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Bird migration refers to the regular seasonal journeys undertaken by many species of birds. Migrations include movements of varied distances made in response to changes in food availability, habitat or weather.
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''See also vagrancy (people) for an alternative use of the term


Vagrancy is a phenomenon in biology whereby individual animals appear well outside their normal range; individual animals which exhibit vagrancy are known as vagrants.
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Europe is one of the seven traditional continents of the Earth. Physically and geologically, Europe is the westernmost peninsula of Eurasia, west of Asia. Europe is bounded to the north by the Arctic Ocean, to the west by the Atlantic Ocean, to the south by the Mediterranean Sea,
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Motto
"Dieu et mon droit" [2]   (French)
"God and my right"
Anthem
"God Save the Queen" [3]
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L. pipixcan

Binomial name
Larus pipixcan
(Wagler, 1831, Mexico)

The Franklin's Gull (Larus pipixcan) is a small gull.
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IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), created in 1963, is the world's most comprehensive inventory of the global conservation status of plant and animal species.
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IUCN

International Organization
Founded October 1948, Fontainebleau, France
Headquarters Rue Mauverney 28, 1196 Gland, Switzerland

Key people Mr Valli Moosa
Ms Julia Marton-Lefèvre
Industry Natural resource conservation
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