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Overview

Distribution

Range

Mediterranean basin to nw India; winters to ne Africa.
  • Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/

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Life History and Behavior

Life Expectancy

Lifespan, longevity, and ageing

Maximum longevity: 31.7 years (wild)
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© Joao Pedro de Magalhaes

Source: AnAge

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Larus genei

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Larus genei

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 2
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

Status in Egypt

Resident breeder, regular passage visitor and winter visitor.

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© Bibliotheca Alexandrina

Source: Bibliotheca Alexandrina - EOL Ar

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Wikipedia

Slender-billed gull

The slender-billed gull (Chroicocephalus genei) is a mid-sized gull which breeds very locally around the Mediterranean and the north of the western Indian Ocean (e.g. Pakistan) on islands and coastal lagoons. Most of the population is somewhat migratory, wintering further south to north Africa and India, and a few birds have wandered to western Europe. A stray individual was reportedly seen on Antigua, April 24, 1976 (AOU, 2000). The scientific name of this bird commemorates the Italian naturalist Giuseppe Gené.

Description[edit]

This species is 37 to 40 cm (14.6 to 15.7 in) long with a 90 to 102 cm (35.4 to 40.2 in) wingspan. It is therefore slightly larger than the black-headed gull, which it resembles, although it does not have a black hood in summer. It has a pale grey body, white head and breast and black tips to the primary wing feathers. The head and dark red bill have an elongated tapering appearance, and this bird also appears long-necked. The legs are dark red, and the iris is yellow. In summer, the breast has a faint pink colouration. This bird takes two years to reach maturity, as is usual in gulls. First year immature birds have a black terminal tail band, and dark areas on the wings.[1]

Distribution and habitat[edit]

The slender-billed gull breeds in lagoons and lakes around the Mediterranean Sea and in similar locations in countries bordering the northwestern part of the Indian Ocean. In 2010 a successful colony was found breeding on an island in a mountain lake in Algeria. The lack of predators and disturbance allowed over 98% of the eggs to hatch.[2] It overwinters on the coast in estuaries and bays. It feeds in deltas, marshes and grassland. It is one of a number of species of gull to feed on landfill sites.[1]

Behaviour[edit]

Egg, Collection Museum Wiesbaden

About half of the slender-billed gull's food is fish. It flies a few metres above the surface of the water and dives into the water when it sees suitable prey. It also probes in the mud with its beak and feeds on marine invertebrates. It also catches insects in flight.[1]

This rather uncommon gull breeds in colonies, nesting on the ground and laying up to three brown-spotted white eggs in a scrape sparsely lined with feathers and bits of vegetation. Incubation takes about 25 days and the young fly after another 25 days. Like most gulls, it is gregarious in winter, both when feeding and in evening roosts. It is not a pelagic species, and is rarely seen far from land.[1]

Status[edit]

The slender-billed gull is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.

References[edit]

  1. ^ a b c d "Larus genei: Slender-billed Gull" (in French). Oiseaux.net. Retrieved 2013-12-12. 
  2. ^ Cherief-Boutera, N.; Bensaci, E.; Cherief, A.; Moali, A. (2013). "First confirmed breeding of the Slender-billed Gull Chroicocephalus genei in Algeria". Alauda 81 (2): 85–90. 
  • American Ornithologists' Union (AOU) (2000): Forty-second supplement to the American Ornithologists' Union Check-list of North American Birds. Auk 117(3): 847–858. DOI: 10.1642/0004-8038(2000)117[0847:FSSTTA]2.0.CO;2
  • Harrison, Peter (1988). Seabirds: An Identification Guide. London: Christopher Helm. ISBN 0-7470-1410-8
  • Pons J.M., Hassanin, A., and Crochet P.A.(2005). Phylogenetic relationships within the Laridae (Charadriiformes: Aves) inferred from mitochondrial markers. Molecular phylogenetics and evolution 37(3):686-699
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Source: Wikipedia

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