Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Gorsachius goisagi Common name Japanese Night-heron
Population name E & SE Asia
Breeding range Japan Non-breeding range Ryukyu Is, SE China,Taiwan, Philippines, Indonesia
Red List Category Endangered
Ramsar regions Asia
Notes

Conservation Framework

Conservation framework Notes
EAAF Partnership
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 1999 1999 250 1,000 [R68]
WPE 4 2005 2005 250 1,000 [R64]
WPE 1 0 0 1 25,000 [R714]
WPE 2 1993 1993 1 10,000 [R138]
WPE 5 2005 2005 250 1,000 [R64]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1975 1995 DEC [R68]
WPE 4 1975 1995 DEC [R64]
WPE 1 1982 1992 DEC [R665]
WPE 2 1985 1995 DEC [R395]
WPE 5 1975 1995 DEC [R64]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 6
WPE 4 2006 6
WPE 1 0 -1
WPE 2 0 -1
WPE 5 2012 5

References

  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org
  • R714 - Yanagisawa, N., Fujimaki, Y. and Higuchi, H. (pers. comm.). 1993. Japanese data on waterbird population sizes, summarised for IWRB.
  • R665 - Unpublished information provided by IWRB Specialist Research Groups
  • R138 - Collar, N.J., Crosby, M.J. and Stattersfield, A.J. 1994. Birds to Watch 2. The World List of Threatened Birds. BirdLife Conservation series No. 4. BirdLife International, Cambridge, UK. 407 pp.
  • R395 - Lansdown, R.V. (pers. comm.) 1996. Data prepared for the Draft Ardeidae Action Plan.

Notes




Copyright Wetlands International 2012

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