Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Nycticorax nycticorax Common name Black-crowned Night-heron
Population name nycticorax, Sub-Saharan Africa & Madagascar
Breeding range Sub-Saharan 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 3 2001 2001 25,000 1,000,000 [R190]
WPE 4 2001 2001 25,000 1,000,000 [R190]
WPE 1 0 0 25,000 100,000 [R518]
WPE 2 0 0 25,000 100,000 [R518]
WPE 5 2001 2001 25,000 1,000,000 Best guess [R190]
CSR 4 2001 2001 25,000 1,000,000 Best guess [R190]
CSR 5 2001 2001 25,000 1,000,000 Best guess [R190]
CSR 6 1975 2014 100,000 300,000 Expert opinion [S8607] [R1371]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1991 2001 STA [R190]
WPE 4 1991 2001 STA [R190]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1991 2001 STA Poor [R190]
CSR 4 1991 2001 STA Poor [R190]
CSR 5 1991 2001 STA Poor [R190]
CSR 6 1990 2014 STA Poor [T6601] [R1371]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 0 -1
WPE 4 0 -1
WPE 1 0 -1
WPE 2 0 -1
WPE 5 2012 10000
CSR 4 0 -1
CSR 5 0 -1

References

  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R518 - Perennou, C. 1992. African waterfowl census 1992. Les D?nombrements Internationaux d?oiseaux d?eau en Afrique, 1992. IWRB, Slimbridge, U.K. 87 pp.
  • 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/
  • 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

  • S8607 - Widespread, with breeding colonies across sub-Saharan Africa
  • T6601 - No evidence of decline; some range expansion; adaptable and colonises habitats adapted by man
  • T6841 - Dodman (2014) considered it to be at least stable. IWC trend analysis shows string increase both in the long- and short-term (Wetlands International 2017)



Copyright Wetlands International 2012

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