Population information

Order name Charadriiformes
Family name Laridae
Scientific name Chlidonias niger Common name Black Tern
Population name niger, Europe & Western Asia/Atlantic coast of Africa
Breeding range W, C & S Europe, W & C Asia E to Altai Mts Non-breeding range Coastal W & C Africa to Namibia
Red List Category Least Concern
Ramsar regions Africa Asia 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 0 0 300,000 500,000 [R579]
WPE 4 1990 2000 500,000 1,000,000 No estimate [S2775] [R63]
WPE 1 0 0 -1 -1
WPE 2 0 0 -1 -1
WPE 5 1990 2000 500,000 1,000,000 Expert opinion [R63]
CSR 4 1990 2000 500,000 1,000,000 Expert opinion [R63]
CSR 5 1990 2000 500,000 1,000,000 Expert opinion [R63]
CSR 6 1990 2012 280,000 580,000 Expert opinion [S8449] [R63] [R1485]

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 [T6447] [R1362] [R1361] [R1485]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 4000
WPE 4 2006 7500
WPE 1 1994 2000
WPE 2 1997 2000
WPE 5 2012 7100
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R579 - Scott, D.A. in press, 2002. Report on the Conservation Status of Migratory Waterbirds in the Agreement Area. Update Report to African Eurasian Migratory Waterbird Agreement Secretariat
  • 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).
  • R1485 - van der Winden, J. 2008b. A review of population estimates of the Eurasian Black Tern Chlidonias niger niger. Vogelwelt 129: 47–50.
  • 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

  • S2775 - BirdLife International (2004)b: European breeding population 83,000-170,000 pairs (249,000-510,000 individuals). W & C Asian population unknown, but perhaps of similar size. Van der Winden (2002) suggests that this estimate too high, and gives extrapolated non-breeding numbers for this population of 250,000-420,000 individuals.
  • S8449 - New estimate for European population is 74,151-153,587 pairs (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). Based on BirdLife International (2004) some additional 375-750 pairs in AL, HR, CZ, MK, MD, RS and ME. This yields a total estimate of 74,526-154,337 pairs. This numbers correspond well with the numbers of moulting birds counted at the Ijselmeer and Sivash (250,000-420,000 individuals - van der Winden 2002), but these figures do not include birds from C&W Asia which probably use other moulting sites. Assuming similar densities for the Asian part of the range of the population, van der Winden (2008) estimated 38,000-78,000 breeding pairs there, which results in a new estimate of 112,526-232,337 pairs. Using a conversion factor of 2.5, after rounding this results in a new estimate of 280,000.580,000 individuals.
  • T6447 - Declined in BG, DK, EE,FI, FR, GR, PL, SK, increased only in LT, stable or fluctuating in BY, DE, ES, HU, NL, SE, TR and UA (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). However, the trend is unknown in IT, LV, RO, RU and the whole of C&W Asia. Declining trend is also shown at the Ijselmeer stopover site for the period of 1980-2007 (van der Winden, 2008). Significant long-term decline.
  • S8995 - New estimate for European population is 74,359-153,942 pairs (BirdLife International 2015). This numbers correspond well with the numbers of moulting birds counted at the Ijselmeer and Sivash (250,000-420,000 individuals - van der Winden 2002), but these figures do not include birds from C&W Asia which probably use other moulting sites. Assuming similar densities for the Asian part of the range of the population, van der Winden (2008) estimated 38,000-78,000 breeding pairs there. Using a conversion factor of 2.5, after rounding this results in a new estimate of 280,000.580,000 individuals.
  • T7078 - European population has declined (BirdLife International 2015), but the trend is unknown for nine countries including RU and the whole of C&W Asia. Declining trend is also shown at the Ijselmeer stopover site for the period of 1980-2007 (van der Winden, 2008). Significant long-term decline.



Copyright Wetlands International 2012

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