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Larus philadelphia

(Bonaparte's Rosy Gull)

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Dutch:

Kleine Kokmeeuw

Common Names in English:

Black-Headed Gull, Bonaparte's Gull, Bonaparte's Rosy Gull, BonaparteÃŒs Gull, Sea Pigeon

Common Names in French:

Mouette De Bonaparte

Common Names in German:

Bonaparte-Möwe, Bonapartemöwe

Common Names in Italian:

Gabbiano Di Bonaparte

Common Names in Japanese:

ボナパルトカモメ

Common Names in Spanish:

Gaviota De Bonaparte

Description

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Family Laridae

Medium to large birds, usually grey or white, often with black markings on the head or wings. They have stout, longish bills, and webbed feet.

Physical Description

Adult : Bill: Shape : slender Body: Size: small.Adult Breeding Season : Head : black Crown: gray-tinged Ear Coverts: dusky spot Face : white Bill: black Shape: slender Body: Mantle: pale gray Rump : white Size: small Underparts: white Legs : Leg Color: red Tail: white.Adult Summer: Head: Hood : blackish Bill: black Body: Back: gray Underparts: white Legs: Leg Color: orange.Adult Winter: Head: white Crown: gray-tinged Ear Coverts: dusky spot Face: white Bill: black Shape: slender Body: Mantle: pale gray Rump: white Size: small Underparts: white Legs: Leg Color: reddish Tail: white.First Winter: Head: black Crown: gray-tinged Ear Coverts: dusky spot Face: white Bill: dusky with brownish-orange base Shape: slender Body: Mantle: pale gray Rump: white Size: small Underparts: white Legs: Leg Color: dull flesh-colored Wings: Secondaries: dusky Tail: white with black subterminal band.

Color:

Adult alternate: Black head · Very narrow white crescents above and below eye · White neck, breast, belly, and tail · Pale gray back and upperwings · Pale scapular crescent and tertial crescent · White wedge on outer primaries · Black tips to primaries creates black trailing edge to primaries and black wingtips at rest · Pale underwing and underside of primaries

Adult basic: Like adult alternate except lacks black hood and instead has black spot on ear coverts

Juvenile/First year: Juvenile strongly washed with brown which fades rapidly with wear · Head and body like adult basic · White tail with black terminal band · Pale gray upperwing marked by dark carpal bar , dark trailing edge and slight white wedge in outer primaries

Size/Age/Growth

About 11 to 14 inches long, with a wingspan of 32 to 36 inches. Adults weigh about 7.5 ounces .

Habitat

Vegetation: freshwater marshes, coastal waters, freshwater lakes and ponds • Sensitivity to Disturbancet: Medium

Typically found at an altitude of 0 to 3,793 meters (0 to 12,444 feet).[1]

Ecology: List of Habitats : 1.1 Forest - Boreal

Biology

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Diet

Mostly aquatic invertebrates and lesser quantities of fish.

Reproduction

Migration

Migratory

Taxonomy

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Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 17-Oct-2001.

Similar Species

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Black-Headed Gull

Members of the genus Larus

There are approximately 171 species in this genus. Here are just 100 of them:

L. alba · L. argentatus (Herring Gull) · L. argentatus antelius · L. argentatus argentatus (Herring Gull) · L. argentatus argenteus · L. argentatus atlantis · L. argentatus birulae · L. argentatus cachinnans · L. argentatus drosti · L. argentatus heuglini · L. argentatus michahellis · L. argentatus mongolicus · L. argentatus omissus · L. argentatus smithsonianus · L. argentatus thayeri · L. argentatus vegae · L. armenicus (Armenian Gull) · L. atlanticus (OlrogÃŒs Gull) · L. atricilla (Laughing Gull) · L. atricilla atricilla (Laughing Gull) · L. atricilla megalopterus · L. audouini · L. audouinii (AudouinÃŒs Gull) · L. azarae · L. belcheri (Band-Tailed Gull) · L. belcheri atlanticus · L. belcheri belcheri (Band-Tailed Gull) · L. borealis · L. brachyrhynchus (Mew Gull) · L. brevirostris (Red-Legged Kittiwake) · L. bridgesii · L. brunneicephalus · L. brunnicephalus (Indian Black-Headed Gull) · L. bulleri (Black-Billed Gull) · L. cachin · L. cachinans · L. cachinnans (Yellow-Legged Gull) · L. cachinnans atlantis · L. cachinnans barabensis · L. cachinnans cachinnans · L. cachinnans michahellis · L. cachinnans mongolicus · L. californicus (Californian Gull) · L. californicus albertaensis (Light-Mantled California Gull) · L. californicus californicus (Dark-Mantled California Gull) · L. canus (Common Kamchatka Gull) · L. canus brachyrhynchus (Mew Gull) · L. canus canus (Common Kamchatka Gull) · L. canus heinei (Mew Gull) · L. canus kamtschatschensis (Eastern Common Gull) · L. canus stegmanni · L. capensis · L. capistratus · L. cirrhocephalus · L. cirrocephalus (Grey-Headed Gull) · L. cirrocephalus cirrocephalus (Gray-Hooded Gull) · L. cirrocephalus poicephalus · L. cirrocephalus poiocephalus · L. crassirostris (Black-Tailed Gull) · L. delawarensis (Ring-Billed Gull) · L. delewarensis · L. dominicanus (Southern Black-Backed Gull) · L. dominicanus austrinus · L. dominicanus dominicanus (Southern Black-Backed Gull) · L. dominicanus melisandae · L. dominicanus vetula · L. eburnea (Ivory Gull) · L. eburneus · L. elegans · L. fuliginosus (Dusky Gull) · L. furcatus (Swallow-Tailed Gull) · L. fuscus (Lesser Black-Backed Gull) · L. fuscus fuscus (Lesser Black-Backed Gull) · L. fuscus graellsi · L. fuscus graellsii (Lesser Black-Backed Gull) · L. fuscus heuglini · L. fuscus intermedius · L. gelastes · L. genei (Slender-Billed Gull) · L. glaucescens (Glaucous-Winged Gull) · L. glaucescens occidentalis · L. glaucescens x · L. glaucoides (White-Winged Gull) · L. glaucoides glaucoides (White-Winged Gull) · L. glaucoides kumlieni (Kumlien's Gull) · L. glaucoides thayeri (Iceland Gull) · L. glaucus · L. graellsii · L. haematorhynchus · L. hartlaubi · L. hartlaubii (King Gull) · L. heermanni (White-Headed Gull) · L. heermannii · L. hemprichi · L. hemprichii (Sooty Gull) · L. hermanni · L. heuglini · L. heuglini heuglini · L. hybrid · L. hyperboreus (White-Winged 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 05, 2008:

Identifiers

Footnotes

  1. Mean = 199.150 meters (653.379 feet), Standard Deviation = 616.470 based on 20,000 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2009-05-10