Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus genei Common name Slender-billed Gull
Population name West Africa (bre)
Breeding range Coasts of Senegal, Mauritania Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes

Conservation Framework

Conservation framework Notes
AEWA
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 10,000 10,000 [R670]
WPE 2 0 0 10,000 10,000 [R670]
WPE 3 0 0 22,500 22,500 [R362]
WPE 4 0 0 22,500 22,500 [R362]
WPE 5 1995 1995 22,500 22,500 Expert opinion [R178] [R602]
CSR 4 1995 1995 22,500 22,500 Expert opinion [R178] [R602]
CSR 5 1995 1995 22,500 22,500 Expert opinion [R178] [R602]
CSR 6 2003 2014 24,000 30,000 Expert opinion [S8595] [R1359]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1972 1982 INC [R670]
WPE 2 1972 1982 INC [R670]
WPE 3 1991 2001 STA [R190]
WPE 4 1991 2001 STA [R190]
WPE 5 1991 2001 STA Poor [R190]
CSR 4 1991 2001 STA Poor [R190]
CSR 5 1991 2001 STA Poor [R190]
CSR 6 2003 2014 STA/FLU Reasonable [T6588] [R1359] [R1519] [R1515] [R1371]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 100
WPE 2 1997 100
WPE 3 2002 230
WPE 4 2006 230
WPE 5 2012 230
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R670 - Urban, E.K., Fry, C.H. and Keith, S. 1986. The Birds of Africa. Volume II. Academic Press, London and Orlando.
  • R362 - Keijl, G.O., Brenninkmeijer, A., Schepers, F.J., Stienen, E.W.M., Veen, J. and Ndiaye, A. 2001. Breeding Gulls and terns in Senegal in 1998 and proposal for new population estimates of gulls and terns in west Africa. Atlantic Seabirds 3 (2) 59-74.
  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R178 - del Hoyo, J., Elliot, A. and Sargatal, J. (eds). 1996. Handbook of the Birds of the World. Volume 3: Hoatzin to Auks. Lynx Edicions, Barcelona.
  • R602 - Snow, D.W. and Perrins, C.M. (1998). The Birds of the Western Palearctic. Concise Edition. Volume 1: Non-Passerines. Oxford University Press, Oxford and New York. 1008 pp.
  • R1359 - van Roomen, M., van Winden, E. & Langendoen, T. 2014. The assessment of trends and population sizes of a selection of waterbird species and populations from the coastal East Atlantic Flyway for Conservation Status Report 6 of The African Eurasian Waterbird Agreement. Wadden Sea Flyway Initiative, Wetlands International & Birdlife International.
  • R1519 - Veen, J. in litt., 2014
  • R1515 - Veen, J., Mullié, W.C., Sylla, C.M., Robinson, P. & Diop, M.S. 2011. Suivi de la reproduction 2011 des colonies d’oiseaux marins de l’Ile aux Oiseaux, Parc National du Delta du Saloum. VEDA Consultancy, Wenum Wiesel / DPNS, Parc National du Delta du Saloum / Wetlands International, Dakar.
  • R1371 - Dodman, T. 2014. Status, Estimates and Trends of Waterbird Populations in Africa: AEWA-listed African populations. Wetlands International. (CSR6 African populations) URL: https://www.wetlands.org/publications/1304/
  • R1548 - Wetlands International (2017) Flyway trend analyses based on data from the African-Eurasian Waterbird Census from the period of 1967-2015. Ede, The Netherlands: Wetlands International. Temporary URL: https://www.dropbox.com/sh/r76f4eyuhzu65co/AADzzQkhySsUDsmwFJUcHs91a?dl=0
  • R1546 - van Roomen M., Nagy S., Foppen R., Dodman T., Citegetse G. & Ndiaye A. (in prep). Status of coastal waterbird populations in the East Atlantic Flyway. Programme Rich Wadden Sea, Leeuwarden, The Netherlands, Sovon, Nijmegen, The Netherlands, Wetlands International, Wageningen, The Netherlands, BirdLife International, Cambridge, United Kingdom &, Wadden Sea Secretariat, Wilhelmshaven, Germany.

Notes

  • S8595 - Veen (in litt. 2014) has estimated that the population consists of 8,000-10,000 pairs based on Veen et al. (2007) and Veen et al. (2011). 17,332 individuals counted in January, rounded to 20,000 (van Roomen et al., 2014).
  • T6588 - Based on mid-winter counts, stable/fluctuating both in the long- and in the short-term (1997-2014 and 2003-2014, respectively) according to van Roomen et al. (2014).
  • T7051 - Wetlands International (2017) assessed the trend as moderate decline based on the TRIM assessment. This differs from the results of van Roomen et al. (2015). The difference might be just caused by applying different trend analysis methods.



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on