Population information

Order name Charadriiformes
Family name Laridae
Scientific name Chlidonias hybrida Common name Whiskered Tern
Population name delalandii, Southern Africa (Malawi & Zambia to South Africa)
Breeding range Southern Africa & Madagascar Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes

Conservation Framework

Conservation framework Notes
AEWA
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 -1 -1
WPE 2 0 0 -1 -1
WPE 3 2001 2001 5,000 15,000 [R190]
WPE 4 2001 2001 5,000 15,000 [R190]
WPE 5 2001 2001 5,000 15,000 Expert opinion [R190]
CSR 4 2001 2001 5,000 15,000 Expert opinion [R190]
CSR 5 2001 2001 5,000 15,000 Expert opinion [R190]
CSR 6 2001 2001 5,000 15,000 Expert opinion [R190]
CSR 7 2001 2001 5,000 15,000 Best guess [R190]

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 1990 2000 STA No idea [R66]
CSR 4 1990 2000 STA No idea [R66]
CSR 5 1990 2000 STA No idea [R66]
CSR 6 2003 2012 Unknown No idea
CSR 7 2003 2012 STA/INC? Reasonable [T7205] [R1602]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 0 -1
WPE 3 2002 100
WPE 4 2006 100
WPE 5 2012 85
CSR 4 0 -1
CSR 5 0 -1
CSR 7 2018 85

References

  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R66 - BirdLife International Website 2002
  • R1602 - Animal Demography Unit (2017) Southern African Bird Atlas Project 2. SABAP1 vs SABAP2 reporting rates (QDGC). URL: http://sabap2.adu.org.za/index.php

Notes

  • T7205 - The reporting rate has increased between SABAP1 and SABAP2 in 56% of the quarter degree grid cells where the species was observed in S Africa.



Copyright Wetlands International 2012

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