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Taxonomic




Order
Family
Species
Population
Discontinued Size - year Size Size estimate quality Size references Trend - year Trend Trend quality Trend references 1% threshold 1% yearset Notes
Anseriformes
Anatidae
Mergus merganser (Goosander)
americanus, W North America 0 - 0 300,000 - 500,000 [R327] 0 - 0 Unknown No idea 3900 2012 [P2409] [S8184]
merganser, Iceland 1990 - 1995 900 - 900 [R578] 0 - 0 Unknown No idea 9 2012 [P2412]
merganser, Central west Europe (bre) 0 - 0 3,000 - 4,200 [R364] 1980 - 1994 INC [R578] 35 2012 [S8186]
merganser, Balkans (bre) 1990 - 1995 50 - 100 [R578] 0 - 0 Unknown No idea 1 2012
merganser, North-east Europe/Black Sea 1967 - 1986 10,000 - 10,000 Expert opinion [R456] 1990 - 2000 STA No idea [R66] 100 2012
merganser, Western Siberia/Caspian 1990 - 1995 20,000 - 20,000 Census based [R578] 1990 - 2000 STA No idea [R66] 200 2012
orientalis, S Asia (non-bre) 0 - 0 2,500 - 10,000 [R115] 1980 - 1990 STA [R115] 50 2012 [P2417]
orientalis, E Asia (non-bre) 1998 - 1998 50,000 - 100,000 [R455] 0 - 0 Unknown No idea 710 2012 [P2418]
americanus, E & C North America 0 - 0 1,000,000 - 1,500,000 [R699] 0 - 0 Unknown No idea 12200 2012 [P2419] [S8192]
Mergus squamatus (Scaly-sided Merganser)
E & SE Asia 2010 - 2010 2,400 - 10,000 Expert opinion [R1163] [R1164] 1990 - 2005 DEC [R64] 50 2012 [S8182]
Mergus serrator (Red-breasted Merganser)
North-west & Central Europe (win) 1995 - 1996 170,000 - 170,000 Expert opinion [R181] [R531] 0 - 0 Unknown No idea 1700 2012 [P2399]
North-east Europe/Black Sea & Mediterranean 1967 - 1986 50,000 - 50,000 Expert opinion [R456] 1990 - 2000 STA No idea [R66] 500 2012 [P2400]
Western Siberia/South-west & Central Asia 1990 - 1995 1 - 10,000 Best guess [R578] 1990 - 2000 STA No idea [R66] 100 2012
W & SE Greenland 0 - 0 10,000 - 25,000 Best guess [R81] 1991 - 2001 STA [R81] 250 2012 [P2402]
E Asia (non-bre) 0 - 0 25,000 - 100,000 Best guess [R251] 0 - 0 Unknown No idea 1000 2012
E North America 0 - 0 40,000 - 50,000 [R629] 0 - 0 Unknown No idea 450 2012 [P2404]
W North America 0 - 0 200,000 - 200,001 [R629] 0 - 0 Unknown No idea 2000 2012 [P2405] [S8181]
Mergus australis (Auckland Merganser)
Auckland Is 1966 - 1966 0 - 0 [R275] 0 - 1901 EXT [R275] -1 0
Mergus octosetaceus (Brazilian Merganser)
C South America 1992 - 1992 50 - 250 Expert opinion [R1024] 2001 - 2010 DEC Reasonable [R64] 1 2012
Histrionicus histrionicus (Harlequin Duck)
NW North America (bre) 0 - 0 150,000 - 250,000 [R580] 1990 - 2000 STA [R580] 1900 2012
E North America (non-bre) 0 - 0 1,800 - 1,800 [R550] 1993 - 2003 INC [R550] 20 2012 [P2363] [S8141]
E & SW Greenland (non-bre) 0 - 0 8,250 - 16,500 [R622] 0 - 0 Unknown No idea 120 2012 [P2364] [S8142]
Iceland 0 - 0 9,000 - 15,000 [R332] 0 - 0 Unknown No idea 120 2012 [S8143]
E Asia (pacificus) 0 - 0 25,000 - 100,000 Best guess [R714] 0 - 0 Unknown No idea 1000 2012 [P2366]
Camptorhynchus labradorius (Labrador Duck)
NE North America 1966 - 1966 0 - 0 [R275] 0 - 1875 EXT [R275] -1 0
Neochen jubata (Orinoco Goose)
N South America 1993 - 1993 25,000 - 100,000 Best guess [R119] 1990 - 2000 DEC [R627] 1000 2012
Chloephaga melanoptera (Andean Goose)
Andean South America 0 - 0 25,000 - 100,000 Best guess [R555] 1990 - 2000 STA [R570] 1000 2012
Chloephaga picta (Upland Goose)
picta 2011 - 2011 50,000 - 150,000 Expert opinion [R1143] 2001 - 2010 DEC Good [R119] 870 2012
leucoptera 0 - 0 138,000 - 255,000 [R709] 1971 - 1981 STA [R605] 1900 2012
Chloephaga hybrida (Kelp Goose)
hybrida 2001 - 2001 25,000 - 100,000 Best guess [R570] 1982 - 1992 STA [R119] 1000 2012
malvinarum 0 - 0 30,000 - 54,000 [R709] 0 - 0 Unknown No idea 400 2012
Chloephaga poliocephala (Ashy-headed Goose)
South America 2011 - 2011 25,000 - 100,000 Best guess [R1143] 2001 - 2010 DEC Good [R119] 1000 2012 [P2087]
Chloephaga rubidiceps (Ruddy-headed Goose)
Tierra del Fuego (bre) 2008 - 2008 744 - 1,000 Census based [R1029] 2001 - 2008 DEC Good [R119] 9 2012
Falkland Islands (Malvinas) 0 - 0 42,000 - 81,000 [R709] 1975 - 1992 STA [R310] 580 2012
Radjah radjah (Radjah Shelduck)
radjah 1992 - 1992 10,000 - 100,000 Best guess [R136] 1983 - 1992 DEC No idea [R136] 1000 2012 [S7088]
rufitergum 1988 - 1999 10,000 - 100,000 Best guess [R267] [R1101] [R1131] 1990 - 1999 STA Poor [R267] 1000 2012 [S7089] [T5919]
Alopochen aegyptiaca (Egyptian Goose)
West Africa 2006 - 2006 5,000 - 10,000 Expert opinion [R192] [R648] 1991 - 2001 DEC Poor [R190] [R648] 70 2012
Eastern & Southern Africa 1990 - 1995 200,000 - 500,000 Expert opinion [R578] 1991 - 2001 STA Poor [R190] 3200 2012
Alopochen mauritiana (Mauritius Shelduck)
Mauritius 2005 - 2005 0 - 0 [R64] 1698 - 2005 EXT [R64] -1 0 [P500] [S6599]
Alopochen kervazoi (Reunion Shelduck)
Reunion Island 0 - 0 0 - 0 [R62] 1900 - 2004 EXT [R62] -1 0 [P577] [S6673]
Tadorna tadorna (Common Shelduck)
North-west Europe 1990 - 1995 300,000 - 300,000 Census based [R578] 1997 - 2007 INC Reasonable [R63] [R888] 3000 2012 [T5913]
Black Sea & Mediterranean 2005 - 2005 120,000 - 120,000 Expert opinion [R874] 1996 - 2006 INC Reasonable [R63] [R888] 1200 2012 [S7084] [T5914]
Western Asia/Caspian & Middle East 1987 - 1991 80,000 - 80,000 Expert opinion [R519] 1997 - 2007 Unknown No idea 800 2012 [T5915]
South Asia (non-bre) 0 - 0 25,000 - 100,000 Best guess [R20] 0 - 0 Unknown No idea 1000 2012 [S7086]
E Asia (non-bre) 0 - 0 100,000 - 150,000 [R455] 0 - 0 Unknown No idea 1200 2012
Tadorna ferruginea (Ruddy Shelduck)
Ethiopia 0 - 0 30 - 80 [R221] 1991 - 2001 DEC [R190] 1 2012
North-west Africa 1989 - 1999 3,000 - 3,000 Expert opinion [R273] 1989 - 1999 DEC Poor [R273] 30 2012
East Mediterranean & Black Sea/North-east Africa 1989 - 1989 20,000 - 20,000 Expert opinion [R456] 0 - 0 Unknown No idea 200 2012 [T5904]
Western Asia & Caspian/Iran & Iraq 1997 - 1999 50,000 - 50,000 Expert opinion [R257] 1997 - 2007 Unknown No idea 500 2012 [T5905]
S & SE Asia (non-bre) 0 - 0 50,000 - 50,000 [R407] 0 - 0 Unknown No idea 500 2012 [S7076]
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Copyright Wetlands International 2012

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