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Larus glaucescens

(glaucous-winged gull)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Dutch:

Beringmeeuw

Common Names in English:

glaucous-winged gull

Common Names in French:

Goéland à ailes grises

Common Names in German:

Beringmöwe

Common Names in Japanese:

ワシカモメ

Common Names in Spanish:

Gaviota Ala Glauca, Gaviota de Bering

Description

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Physical Description

Adult : Head : white Face : Eye Color: dark brown-black Eye Ring: dull red Bill: yellow with red spot on lower mandible Lower Mandible: yellow with red spot Neck: white Body: Mantle: pale gray Rump : white Underparts: white Legs : Foot Color: pink Leg Color: pink Tail: white Undertail Coverts: white.

Color:

Adult alternate: Bright yellow bill with red spot at gonys · Pink legs · Dark eyes · White head , neck, breast and belly · Pale gray mantle · White tertial crescent · Pale gray primaries (do not contrast with back) have white tips · White tail

Adult basic: Like adult alternate but blurry brown streaking and spotting on head and nape

Juvenile/First-year: Black bill · Wholly pale brown body plumage · Pale brown primaries do not contrast with body plumage · Pale brown tail does not contrast with back · Black legs quickly become pink

Second-year: Black bill with pink base · Pale brown head, neck, upper breast, belly, primaries and tail · Pale gray back

Third-year: Like adult basic, but often lacks adult bill pattern , wing pattern, and often retains a partial tail band

Size/Age/Growth

About 22 to 27 inches long, with a wingspan of 54 to 58 inches. Adults weigh about 35.2 ounces .

Habitat

Vegetation: freshwater marshes, coastal waters, coastal sand beaches and mudflats, coastal rocky beaches • Sensitivity to Disturbance: Medium

Typically found at an altitude of 0 to 3,827 meters (0 to 12,556 feet).[1]

Ecology: This species can be found in coastal areas and over shelf waters . Its diet is comprised of fish, various marrine invertebrates , carrion , offal , bird eggs and small mammals, with the exact composition varying depending on locality . It uses a variety of feeding methods, including plunge-diving, diving from the surface and dropping shellfish on rocks. It arrives at breeding colonies between February and March, and will nest on a wide variety of substrates including rocky islands, cliffs , inland lakes , city parks and buildings. It is usually colonial but can be solitary. Some birds remain on their territories over winter, but others will migrate to the southern edges of its range1.

[2].

List of Habitats :

Biology

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Diet

Mostly aquatic invertebrates , carrion , and fish.

Reproduction

Migration

Most do not migrate

Taxonomy

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Synonyms

Larus glaucescens Naumann • Larus glaucescens Naumann, 1840

Notes

Name Status: Accepted Name .

Last scrutiny: 17-Oct-2001

Similar Species

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Glaucous Gull, Western Gull

Members of the genus Larus

ZipcodeZoo has pages for 83 species and subspecies in this genus:

L. argentatus (Herring Gull) · L. argentatus argentatus (Herring Gull) · L. armenicus (Armenian Gull) · L. atlanticus (OlrogÌs Gull) · L. atricilla (Laughing Gull) · L. atricilla atricilla (Laughing Gull) · L. audouinii (AudouinÌs Gull) · L. belcheri (Band Tailed Gull) · L. belcheri belcheri (Band-Tailed Gull) · L. brachyrhynchus (Mew Gull) · L. brevirostris (Red-Legged Kittiwake) · L. brunnicephalus (Indian Black-Headed Gull) · L. bulleri (Black-Billed Gull) · L. cachinnans (Caspian Gull) · L. californicus (Californian Gull) · L. californicus albertaensis (Light-Mantled California Gull) · L. californicus californicus (Dark-Mantled California Gull) · L. canus (Common Kamchatka Gull) · (Mew Gull) · L. canus canus (Mew Gull) · L. canus heinei (Mew Gull) · (Eastern Common Gull) · L. cirrocephalus (Grey-Hooded Gull) · L. cirrocephalus cirrocephalus (Gray-Headed Gull) · L. crassirostris (Black-Tailed Gull) · L. delawarensis (Ring-Bill Gull) · L. dominicanus (Southern Black-Backed Gull) · L. dominicanus dominicanus (Southern Black-Backed Gull) · L. eburnea (Ivory Gull) · L. fuliginosus (Dusky Gull) · L. furcatus (Swallow-Tailed Gull) · L. fuscus (Lesser Black-Backed Gull) · L. fuscus fuscus (Lesser Black-Backed Gull) · L. fuscus graellsii (Lesser Black-Backed Gull) · L. genei (Slender-Billed Gull) · L. glaucescens (Glaucous-Winged Gull) · L. glaucoides (White-Winged Gull) · L. glaucoides glaucoides (Iceland Gull) · L. glaucoides kumlieni (Iceland Gull) · L. glaucoides thayeri (Iceland Gull) · L. hartlaubii (Hartlaub's Gull) · (White-Headed Gull) · L. hemprichii (Hemprich's Gull) · L. hyperboreus (White-Winged Gull) · L. hyperboreus barrovianus (Glaucous Gull) · L. hyperboreus hyperboreus (Glaucous Gull) · L. ichthyaetus (Great Black-Headed Gull) · L. kumlieni (Kumlien's Gull) · L. leucophthalmus (White-Eyed Gull) · L. livens (Yellow-Footed Gull) · L. maculipennis (Brown-Hooded Gull) · L. marinus (Greater Black-Backed Gull) · L. melanocephalus (Mediterranean Gull) · L. michahellis (Yellow-Legged Gull) · L. minutus (Little Gull) · L. modestus (Grey Gull) · L. novaehollandiae (Silver Gull) · L. novaehollandiae novaehollandiae (Silver Gull) · L. occidentalis (Wyman's Gull) · L. occidentalis livens (Western Gull) · L. occidentalis occidentalis (Western Gull) · L. occidentalis wymani (Western Gull) · L. pacificus (Large-Billed Gull) · L. pacificus pacificus (Pacific Gull) · L. philadelphia (Bonaparte's Rosy Gull) · L. pipixcan (Francolin's Rosy Gull) · L. relictus (Relict Gull) · L. ridibundus (Common Black-Headed Gull) · L. ridibundus ridibundus (Black-Headed Gull) · L. rosea (Ross' Gull) · L. sabini (Sabine's Gull) · L. sabini sabina (Sabine's Gull) · L. sabini woznesenskii (Sabine's Gull) · L. saundersi (Chinese Black-Headed Gull) · L. schistisagus (Slaty-Backed Gull) · L. scopulinus (Red-Billed Gull) · L. scoresbii (Magellan Gull) · L. serranus (Andean Gull) · L. thayeri (Iceland Gull) · L. tridactyla (Black-Legged Kittiwake) · L. tridactyla pollicaris (Black-Legged Kittiwake) · L. tridactyla tridactyla (Black-Legged Kittiwake) · L. vetula (Cape Gull)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 11, 2008:

Identifiers

Footnotes

  1. Mean = 48.280 meters (158.399 feet), Standard Deviation = 325.470 based on 4,009 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  2. BirdLife International 2009. Larus glaucescens. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 01 February 2012. [back]
Last Revised: 7/14/2012