Population information

Order name Pelicaniformes
Family name Phalacrocoracidae
Scientific name Phalacrocorax atriceps Common name Imperial Shag
Population name nivalis
Breeding range Heard Island Non-breeding range
Red List Category Least Concern
Ramsar regions Neotropics
Notes Sometimes included in genus Leucocarbo. Treated as a separate species until WPE4.

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 0 0 3,270 3,600 [R66]
WPE 4 0 0 3,270 3,600 [S3442] [R67]
WPE 1 0 0 250 250 [R165]
WPE 2 0 0 600 1,000 [R179]
WPE 5 2005 2005 3,000 3,000 Census based [S6389] [R1194] [R1195]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1990 2000 STA No idea [R66]
WPE 4 1960 2000 FLU [R249]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1996 2005 STA Reasonable [R1076]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 35
WPE 4 2006 35
WPE 1 1994 3
WPE 2 1997 8
WPE 5 2012 30

References

  • R66 - BirdLife International Website 2002
  • R67 - BirdLife International Website 2006
  • R249 - Garnett, S.T. and Crowley, G.M. 2000. The Action Plan for Australian Birds 2000. Environment Australia, Canberra.
  • R165 - Croxall, J.P., Evans, P.G.H. and Schreiber, R.W. (eds.). 1984. Status and Conservation of the World's Seabirds. ICBP Technical Publication No. 2. Cambridge, UK.
  • R179 - del Hoyo, J., Elliott A. and Sargatal, J. (eds). 1992. Handbook of the Birds of the World. Volume 1: Ostrich to Ducks. Lynx Editions, Barcelona.
  • R1194 - Woehler, E.J. 2006. Status and conservation of the seabirds of Heard Island and the McDonald Islands. In: Green K. and Woehler E.J. (eds.) Heard Island, Southern Ocean Sentinel. Surrey Beatty and Sons, Chipping Norton, pp. 128-165.
  • R1195 - Woehler, E. in litt. 26 February 2012 and 21 April 2012.
  • R1076 - Garnett, S.T., Szabo, J.K. and Dutson, G. 2010. The Action Plan for Australian Birds 2010. CSIRO Publishing, Melbourne.

Notes

  • S3442 - 68: Reported discovery of a colony of 1,000 nests at Cape Pillar. Existing known pop was 90-200 pairs. 1,090 -1,200 pairs x 3, 3,270-3,600 individuals.
  • S6389 - Estimate derived by WPE method of breeding pairs x3, based on recent comprehensive survey, but rounded down to match expert advice (Woehler, E. In litt. 26 February 2012 and 21 April 2012).



Copyright Wetlands International 2012

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