Population information

Order name Charadriiformes
Family name Laridae
Scientific name Gelochelidon nilotica Common name Common Gull-billed Tern
Population name nilotica, Black Sea & East Mediterranean/Eastern Africa
Breeding range Black Sea, E Mediterranean Non-breeding range Sudan S to Botswana
Red List Category Least Concern
Ramsar regions Africa Europe
Notes

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 14,000 39,000 [R69]
WPE 4 1990 2000 24,000 52,000 [S2411] [R63]
WPE 1 1994 1994 15,000 25,000 [R70]
WPE 2 1994 1994 15,000 25,000 [R70]
WPE 5 1990 2000 24,000 52,000 Expert opinion [R63]
CSR 4 1990 2000 24,000 52,000 Expert opinion [R63]
CSR 5 1990 2000 24,000 52,000 Expert opinion [R63]
CSR 6 1990 2013 24,000 52,000 Expert opinion [S8428] [R1362] [R63]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1970 1990 DEC [R69]
WPE 4 1990 2000 DEC [R63]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1990 2000 DEC Poor [R63]
CSR 4 1990 2000 DEC Poor [R63]
CSR 5 1990 2000 DEC Poor [R63]
CSR 6 2000 2012 Unknown Poor [T6427] [R63] [R1361]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 270
WPE 4 2006 380
WPE 1 1994 200
WPE 2 1997 200
WPE 5 2012 350
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.
  • R63 - BirdLife International (2004)b. Birds in Europe, population estimates, trends and conservation status. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 12).
  • R70 - BirdLife International/European Birds Census Council, European Birds Database. Accessed March 1994.
  • 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

Notes

  • S2411 - 64: Summed breeding populations of relevant countries 8,085 - 17,255 pairs (24,255 - 51,765 individuals).
  • S8428 - New data only available from BG and RO: 7-18 pairs (European Topic Centre on Biological Diversity, in prep.). Further 8,001-17,010 pairs (BirdLife International, 2004).
  • T6427 - Its population fluctuated in RU, declined between 1990 and 2000 in AL, GR, TR, UA and RO (BirdLife International 2004). Current trend is unknown in RO (BirdLife International et al., in prep.).
  • S8979 - 8,725-12,336 pairs. (All birds from RU allocated to this population).
  • T7057 - Significant long-term decline.



Copyright Wetlands International 2012

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