Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus ridibundus Common name Black-headed Gull
Population name West Asia/SW Asia & NE Africa
Breeding range W Russia, Central Asia Non-breeding range SW & Central Asia, Eastern Africa
Red List Category Least Concern
Ramsar regions Africa Asia Europe
Notes

Conservation Framework

Conservation framework Notes
AEWA
CAF Action Plan
EUBD
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 1987 1991 250,000 250,000 [R519]
WPE 2 1987 1991 250,000 250,000 [R519]
WPE 3 1987 1991 250,000 250,000 [R519]
WPE 4 1987 1991 250,000 250,000 [R519]
WPE 5 1987 1991 250,000 250,000 Expert opinion [R519]
CSR 4 1987 1991 250,000 250,000 Expert opinion [R519]
CSR 5 1987 1991 250,000 250,000 Expert opinion [R519]
CSR 6 2008 2014 250,000 250,000 Best guess [S8421] [R519] [R1422]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 1997 2007 INC Poor [T5115] [R888]
CSR 4 1990 2000 STA No idea [R66]
CSR 5 1997 2007 INC Poor [T1504] [R888]
CSR 6 2003 2012 STA/FLU Poor [T6420] [R1381]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 2500
WPE 2 1997 2500
WPE 3 2002 2500
WPE 4 2006 2500
WPE 5 2012 2500
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R519 - Perennou, C.P., Mundkur, T. and Scott, D.A. 1994. The Asian Waterfowl Census 1987-1991: distribution and status of Asian waterfowl. IWRB Spec. Publ. No. 24; AWB Spec. Publ. No. 86. Slimbridge, UK and Kuala Lumpur, Malaysia.
  • R888 - Wetlands International, 2012. Results of trend analysis undertaken for CSR5 2012, presented in Annex 4. http://www.unep-aewa.org/meetings/en/mop/mop5_docs/pdf/mop5_14_csr5.pdf
  • R66 - BirdLife International Website 2002
  • R1422 - Nagy, S., Alanazi, F., Almomen, A. Alsuhaibani, A, AlRashidi, M., Dereliev, S., Keijl, G. Ruiters, P. & Shobrak, M. 2014. Winter waterbird survey in the Kingdom of Saudi Arabia in January 2014. Wetlands International, Ede, The Netherlands.
  • R1381 - Nagy, S., Flink, S., Langendoen, T. (2014) Waterbird trends 1988-2012: Results of trend analyses of data from the International Waterbird Census in the African-Eurasian Flyway. Wetlands International, Ede.
  • 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

Notes

  • T5115 - Wetlands International 2012. Trend 1993-2007: +2.4% p.a. ? Increase.
  • T1504 - 898. Trend 1993-2007: +2.4% p.a. – Increase.
  • S8421 - Most recent maximum annual count total in SW Asia was 74,828 individuals in 2011. Overall, the sum of the site level 5-year-means was 105,311 in SW Asia for th eepriod of 2008 and 2012, but this has not included SA and OM. Nagy et al. (in prep.) counted 11,902 individuals at Sabkhat al Fasl and Tarut Bay and 333 along c. 7% of the Red Sea coast (equivalent to some 4,700 if extrapolated for the whole SA section of the Red Sea coast) in SA in Jan. 2014.. 5,760-6,222 individuals in Uganda in 2006-2007. Otherwise, totals from E Africa are under a thousand birds. These suggest that the estimate of Perennou et al. (1994) is still valid.
  • T6420 - Most recent IWC trend based on 444 plots produced uncertain/fluctuating trend for 2003-2012: 0.9957±0.0186 (Nagy et al., 2014). However, the results should be treated with caution because in 20 out of 25 years, real counts formed less than 30% of the total accounting for missing values.
  • T7050 - Also stable in the long-term.



Copyright Wetlands International 2012

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