Population information

Order name Charadriiformes
Family name Laridae
Scientific name Gelochelidon nilotica Common name Common Gull-billed Tern
Population name nilotica, Western Europe/West Africa
Breeding range W & SW Europe, NW & W Africa S to Mauritania Non-breeding range Mauritania E to Nigeria & Chad
Red List Category Least Concern
Ramsar regions Africa Europe
Notes Often placed in monotypic genus Gelochelidon.

Conservation Framework

Conservation framework Notes
AEWA
EUBD
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 1970 1990 10,000 16,000 [R69]
WPE 1 1994 1994 12,000 12,000 [R70]
WPE 2 1994 1994 12,000 12,000 [R70]
WPE 4 1990 2000 14,000 21,000 [S2407] [R63]
WPE 5 2001 2001 14,000 21,000 Expert opinion [R63] [R190]
CSR 4 2001 2001 14,000 21,000 Expert opinion [R63] [R190]
CSR 5 2001 2001 14,000 21,000 Expert opinion [R63] [R190]
CSR 6 2002 2012 37,000 63,000 Expert opinion [S8427] [R1362] [R1361] [R1371]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1970 1990 DEC [R69]
WPE 1 1983 1993 DEC [R70]
WPE 2 1983 1993 DEC [R70]
WPE 4 1990 2000 STA [R63]
WPE 5 1990 2000 STA Poor [R63]
CSR 4 1990 2000 STA Poor [R63]
CSR 5 1990 2000 STA Poor [R63]
CSR 6 2000 2012 INC Reasonable [T6426] [R1362] [R1361]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 130
WPE 1 1994 120
WPE 2 1997 120
WPE 4 2006 180
WPE 5 2012 170
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R69 - BirdLife International/European Bird Census Council. 2000. European bird populations: estimates and trends. Cambridge, UK. BirdLife International Conservation Series No. 10.
  • R70 - BirdLife International/European Birds Census Council, European Birds Database. Accessed March 1994.
  • R63 - BirdLife International (2004)b. Birds in Europe, population estimates, trends and conservation status. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 12).
  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • 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.
  • 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/
  • R1549 - BirdLife International 2015. European Red List of Birds. Luxembourg: Office for Official Publications of the European Communities. http://datazone.birdlife.org/info/euroredlist

Notes

  • S2407 - Summed breeding populations of relevant European countries 3,752 - 4,369 pairs (11,256 - 13,107 individuals) (64). 192 calculates African total of 3,135-7,485 individuals. Overall total 14,391 - 20,592.
  • S8427 - 7,852-8,876 pairs in DK, DE, FR, ES, PT and IT (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). According to Dodman (2014) 4500-12,000 pairs in NW and W Africa.
  • T6426 - 2000-2012:1.0107-1.0110, 1980-2012: 1.0005-1.0050 (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.).Increased in all West Mediterranean EU Member States except IT where trend is unknown. Declined in DK and fluctuated in DE.
  • S8978 - 7,852-8,876 pairs in Europe (BirdLife International 2015). According to Dodman (2014) 4500-12,000 pairs in NW and W Africa.



Copyright Wetlands International 2012

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