Population information

Order name Charadriiformes
Family name Laridae
Scientific name Chlidonias leucopterus Common name White-winged Tern
Population name Eastern Europe & Western Asia/Africa
Breeding range C & E Europe, W & W-Central Asia Non-breeding range Sub-Saharan 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 200,000 250,000 [R519]
WPE 4 0 0 2,500,000 3,500,000 [S2766] [R107]
WPE 2 1987 1991 200,000 250,000 [R519]
WPE 3 1970 1990 2,500,000 3,500,000 [R69]
WPE 5 1999 2000 3,000,000 3,000,000 Expert opinion [R107]
CSR 4 1999 2000 3,000,000 3,000,000 Expert opinion [R107]
CSR 5 1999 2000 3,000,000 3,000,000 Expert opinion [R107]
CSR 6 1999 2000 2,500,000 3,500,000 Best guess [S8448] [R192] [R1362] [R1361] [R63]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1977 1991 DEC [R519]
WPE 4 1990 2000 STA? [R63]
WPE 2 1977 1991 DEC [R519]
WPE 3 0 0 Unknown
WPE 5 1990 2000 STA? No idea [R63]
CSR 4 1990 2000 STA? No idea [R63]
CSR 5 1990 2000 STA? No idea [R63]
CSR 6 2000 2012 FLU Reasonable [T6446] [R1362] [R1361]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 2300
WPE 4 2006 20000
WPE 2 1997 2300
WPE 3 2002 20000
WPE 5 2012 30000
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.
  • R107 - Byaruhanga, A., Arinaitwe, J. and Williams, C. 2002. Large concentrations of White-winged Black Terns Chlidonias leucopterus at Lutembe Bay, Lake Victoria. Bull African Bird Club 9 (1):25-26.
  • R63 - BirdLife International (2004)b. Birds in Europe, population estimates, trends and conservation status. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 12).
  • R69 - BirdLife International/European Bird Census Council. 2000. European bird populations: estimates and trends. Cambridge, UK. BirdLife International Conservation Series No. 10.
  • R192 - Dodman, T., 2006. Status, estimates and trends of waterbird populations in Africa. Wetlands International, Dakar.
  • R1362 - European Topic Centre on Biological Diversity (in prep) Population and trend data provided by the EU Member States in the frame of their reporting under Article 12 of the EU Birds Directive. Online fact sheets. European Topic Centre on Biological Diversity, Paris. URL: http://bd.eionet.europa.eu/activities/Reporting/Article_12/Reports_2013/Member_State_Deliveries. Accessed on 31 July 2014.
  • R1361 - BirdLife International, BTO, EBCC, CSO, IUCN, RSPB, SOVON, Wetlands International (in prep) Population and trend data provided to the European Red List of Birds Project funded by the European Commission. Digital dataset. BirdLife International, Cambridge, UK. Accessed on 31 July 2014.
  • R1549 - BirdLife International 2015. European Red List of Birds. Luxembourg: Office for Official Publications of the European Communities. http://datazone.birdlife.org/info/euroredlist
  • 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

  • S2766 - 337: Over 3 million roost at Lutembe Bay, Lake Victoria, Uganda, in northern winter. 64: European breeding population 74,000-210,000 pairs (222,000-630,000 individuals). For populations over 2 million birds, Ramsar Convention criterion 5 (20,000 or more waterbirds) applies.
  • S8448 - The latest European breeding total is 63,587-163,307 pairs (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). Further 1,010-10,080 pairs in AZ, HR, MK, RS and ME (BirdLife International, 2004). This would yield an estimate of 193,000-520,000 individuals. However, Dodman (2006) estimated the size of the population at 2,500,000-3,500,000 individuals based on observations of high counts in Africa.
  • T6446 - 9 out of 14 European countries reported fluctuating numbers nationally. DE, LT, LV reported increasing numbers and the trend is unknown in BG and RO.
  • T7077 - 9 out of 14 European countries reported fluctuating numbers nationally. DE, LT, LV reported increasing numbers and the trend is unknown in BG and RO (BirdLife International 2015). Trend at the wintering areas appear to be a steep decline, but this is probably the result of earlier departure from the South African wintering grounds (Wetlands International 2017).



Copyright Wetlands International 2012

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