||Diomedea amsterdamensis Roux et al. 1983
||Amsterdam Albatross, Amsterdam Island Albatross
||Robertson, C. J. R.; Nunn, G. B. 1998. Towards a new taxonomy for albatrosses. In: Robertson, G.; Gales, R. (ed.), Albatross biology and conservation, pp. 13-19. Surrey Beatty & Sons, Chipping Norton, Australia.
||110 cm. Huge albatross with brownish breeding plumage. Juvenile very similar to juvenile Wandering Albatross D. exulans. Adult has almost entirely chocolate-brown upperparts. White face mask and throat. Broad brown breast-band. White lower breast and belly with brown undertail-coverts. White underwing with dark tip. Similar spp. Dark leading edge to underwing possibly broader than in D. exulans. Dark tip and cutting edges to pink bill characteristic, and best identification feature if visible, compared to, for example, Antipodean Albatross D. antipodensis, which lacks dark marks on bill.
|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Cooper, J., Croxall, J., Weimerskirsch, H., Barbraud, C., Misiak, W. & Micol, T.
||Anderson, O., Bird, J., Calvert, R., Nel, D., Pilgrim, J., Stattersfield, A., Sullivan, B., Symes, A., Small, C. & Ashpole, J
This species qualifies as Critically Endangered because it has an extremely small population, confined to a tiny area on one island. Although numbers have recently been increasing, a continuing decline is projected owing to the impact of a disease which is probably already causing chick mortality.
|Previously published Red List assessments:|
- 2016 – Critically Endangered (CR)
- 2015 – Critically Endangered (CR)
- 2013 – Critically Endangered (CR)
- 2012 – Critically Endangered (CR)
- 2010 – Critically Endangered (CR)
- 2009 – Critically Endangered (CR)
- 2008 – Critically Endangered (CR)
- 2007 – Critically Endangered (CR)
- 2006 – Critically Endangered (CR)
- 2005 – Critically Endangered (CR)
- 2004 – Critically Endangered (CR)
- 2003 – Critically Endangered (CR)
- 2000 – Critically Endangered (CR)
- 1996 – Critically Endangered (CR)
- 1994 – Critically Endangered (CR)
- 1988 – Threatened (T)
|Range Description:||The species breeds on the Plateau des Tourbières on Amsterdam Island (French Southern Territories) in the southern Indian Ocean. It has a total population of c. 170 birds including 80 mature individuals, with c. 26 pairs breeding annually, showing an increase since 1984, when the first census was carried out (Weimerskirch et al. 1997, Inchausti and Weimerskirch 2001, H. Weimerskirch in litt. 2005, 2010, Rains et al. 2011). The population was probably formerly larger when its range was more extensive over the slopes of the island (Weimerskirch et al. 1997). Satellite tracking has shown that adult birds range from the coast of eastern South Africa to the south of western Australia in non-breeding years (Hirschfeld 2008), and possible sightings have been reported from Australia (Environment Australia 1999) and New Zealand (Carboneras 1992b). In July 2013 a bird photographed off the Western Cape represents the first confirmed sight record for South Africa (Cooper 2013).|
French Southern Territories (Amsterdam-St. Paul Is.)
|♦ Estimated area of occupancy (AOO) - km2:||7||♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||11900000|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Number of Locations:||1||♦ Continuing decline in number of locations:||Unknown|
|♦ Extreme fluctuations in the number of locations:||No||♦ Lower elevation limit (metres):||500|
|♦ Upper elevation limit (metres):||600|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The population was estimated at c. 170 birds in total, including 80 mature individuals, with c. 26 pairs breeding annually by Rains et al. (2011). Between 2001 and 2007 there were c. 24-31 pairs breeding annually (Rivalan et al. 2010), so the population is now likely to be around 100 mature individuals for this biennially breeding species. The number of mature individuals was estimated to be fewer than 50 until 1998 (C. Barbraud in litt. 2013).|
Trend Justification: Although the population increased between 1983-2009 (ACAP unpubl. data, Inchausti and Weimerskirch 2001, Rivalan et al. 2010), it is believed to have suffered severe declines in the 1970s, and so, over three generations (c. 82 years), has almost certainly declined overall.
|Current Population Trend:||Decreasing|
|♦ Number of mature individuals:||100||♦ Continuing decline of mature individuals:||Yes|
|♦ Extreme fluctuations:||No||♦ Population severely fragmented:||No|
|♦ No. of subpopulations:||1||♦ Continuing decline in subpopulations:||Unknown|
|♦ Extreme fluctuations in subpopulations:||No||♦ All individuals in one subpopulation:||Yes|
|♦ No. of individuals in largest subpopulation:||100|