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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
Ciconiiformes
Ardeidae
Nycticorax caledonicus (Rufous Night-heron)
pelewensis 2001 - 2001 1 - 10,000 Best guess [R202] 0 - 0 Unknown No idea 100 2012
mandibularis 2001 - 2001 10,000 - 100,000 Best guess [R202] 0 - 0 Unknown No idea 1000 2012 [P1780]
hilli 2004 - 2011 25,000 - 1,000,000 Best guess [R341] [R1101] [R1149] [R1150] 1982 - 2011 FLU Poor [R1101] [R341] 10000 2012 [S7743] [T5674]
Gorsachius magnificus (White-eared Night-heron)
SE Asia 2000 - 2000 250 - 1,000 [R65] 1995 - 2005 DEC [R64] 5 2012 [S7745]
Gorsachius goisagi (Japanese Night-heron)
E & SE Asia 2005 - 2005 250 - 1,000 [R64] 1975 - 1995 DEC [R64] 5 2012
Gorsachius melanolophus (Malay Night-heron)
South Asia 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
SE Asia 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
Philippines 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0 [P1787]
Palawan, Philippines 0 - 0 1 - 10,000 Best guess [R395] 0 - 0 Unknown No idea 100 2012 [P1788]
Nicobar Is 0 - 0 1 - 10,000 Best guess [R395] 0 - 0 Unknown No idea 100 2012 [P1789]
Botaurus pinnatus (Pinnated Bittern)
pinnatus 2005 - 2011 10,000 - 25,000 Best guess [R1070] [R1183] [R1191] 2001 - 2010 STA Poor [R1183] [R1191] [R1070] 250 2012 [S7817]
caribaeus 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
Botaurus lentiginosus (American Bittern)
North America 2000 - 2000 2,980,000 - 2,980,000 [R1192] 1966 - 2004 DEC? No idea [R1192] 29800 2012 [S7816]
Botaurus stellaris (Eurasian Bittern)
stellaris, W Europe, NW Africa (bre) 1983 - 1999 5,850 - 6,700 Expert opinion [R431] 1995 - 2005 DEC Reasonable [R668] 65 2012 [P1855]
stellaris, C & E Europe, Black Sea & E Mediterranean (bre) 1993 - 1993 53,800 - 125,000 Expert opinion [R431] 1995 - 2005 DEC Poor [R668] 820 2012 [P1856]
stellaris, South-west Asia (win) 2006 - 2006 25,000 - 100,000 Best guess [R668] 1990 - 2000 STA No idea [R66] 1000 2012
capensis, Southern Africa 1990 - 2000 5,000 - 5,000 Census based [R232] 1986 - 1996 DEC Poor [R295] 50 2012
stellaris, South Asia (non-bre) 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
stellaris, S & E Asia (non-bre) 2001 - 2001 25,000 - 100,000 Best guess [R124] 1981 - 1991 DEC [R124] 1000 2012 [P1860]
Botaurus poiciloptilus (Australasian Bittern)
SW Australia 2009 - 2010 60 - 230 Census based [R1026] 2000 - 2010 DEC Reasonable [R1144] [R1076] 1 2012 [P1862] [S7825] [T5468]
SE Australia 2009 - 2010 310 - 960 Census based [R1026] 2000 - 2010 DEC Reasonable [R1076] 5 2012 [P1863] [S7826] [T5469]
New Zealand 2011 - 2011 1,000 - 1,500 Expert opinion [R1139] 2001 - 2010 DEC? No idea [R1139] 10 2012 [P1864] [S7827] [T5470]
New Caledonia 2011 - 2011 -1 - -1 [R1059] 2001 - 2010 EXT? [R1059] -1 0 [P1865]
Ixobrychus involucris (Stripe-backed Bittern)
N South America 1993 - 1993 100,000 - 1,000,000 Best guess [R119] 1982 - 1992 STA [R119] 10000 2012 [P1811]
S South America 2011 - 2011 10,000 - 25,000 Best guess [R1092] [R1183] 2001 - 2010 STA Reasonable [R1092] [R1183] 250 2012 [P1812]
Ixobrychus exilis (Least Bittern)
exilis 2000 - 2000 128,000 - 128,000 Best guess [R687] 0 - 0 Unknown No idea 1300 2012 [S7788]
pullus 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
bogotensis 2011 - 2011 1,000 - 1,000 Best guess [R1010] 2001 - 2010 DEC Reasonable [R1010] 10 2012
erythromelas 2005 - 2011 10,000 - 25,000 Best guess [R1010] 0 - 0 Unknown No idea 250 2012
peruvianus 2011 - 2011 1,000 - 5,000 Best guess [R1141] [R1183] 2001 - 2010 STA Poor [R1183] [R1141] 20 2012
Ixobrychus minutus (Common Little Bittern)
minutus, W Europe, NW Africa/Subsaharan Africa 2000 - 2005 11,900 - 17,900 Expert opinion [R431] 1995 - 2005 STA Poor [R63] 150 2012 [P1814] [T5708]
minutus, C & E Europe, Black Sea & E Mediterranean/Sub-saharan Africa 1995 - 2005 110,000 - 325,000 Expert opinion [R668] 1995 - 2005 DEC Poor [R668] 1900 2012 [P1815]
minutus, West & South-west Asia/Sub-Saharan Africa 1987 - 1991 25,000 - 100,000 Best guess [R519] 1990 - 2000 STA No idea [R66] 1000 2012
minutus, South Asia 1987 - 1991 10,000 - 25,000 Best guess [R519] 0 - 0 Unknown No idea 250 2012
payesii, Sub-Saharan Africa 1990 - 2000 25,000 - 100,000 Best guess [R232] 1990 - 2000 STA No idea [R66] 1000 2012
podiceps 0 - 0 3,000 - 15,000 [R301] 0 - 0 Unknown No idea 65 2012
Ixobrychus novaezelandiae (New Zealand Little Bittern)
New Zealand 0 - 0 0 - 0 [R534] 1982 - 1992 EXT [R534] -1 0 [P1825]
Ixobrychus sinensis (Yellow Bittern)
Seychelles 0 - 0 1 - 300 [R552] 1991 - 2001 DEC [R597] 1 2012
South Asia 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
E & SE Asia 2006 - 2006 100,000 - 1,000,000 Best guess [R668] 1985 - 2005 INC [R668] 10000 2012 [S7786]
Ixobrychus eurhythmus (Schrenck's Bittern)
E & SE Asia 0 - 0 1 - 25,000 Best guess [R395] 1985 - 1995 DEC [R395] 250 2012
Ixobrychus cinnamomeus (Cinnamon Bittern)
South Asia 1987 - 1991 25,000 - 1,000,000 Best guess [R519] 0 - 0 Unknown No idea 10000 2012
E, SE Asia 2006 - 2006 100,000 - 1,000,000 Best guess [R668] 1985 - 2005 STA [R668] 10000 2012
Ixobrychus sturmii (Dwarf Bittern)
Sub-Saharan Africa 1990 - 2000 25,000 - 100,000 Best guess [R232] 1990 - 2000 STA No idea [R66] 1000 2012
Ixobrychus flavicollis (Black Bittern)
flavicollis, South Asia 1987 - 1991 25,000 - 100,000 Best guess [R519] 0 - 0 Unknown No idea 1000 2012 [P1845]
flavicollis, E, SE Asia 2006 - 2006 10,000 - 100,000 Best guess [R668] 0 - 0 Unknown No idea 1000 2012
australis, Australia, New Guinea 1999 - 2002 10,000 - 100,000 Best guess [R267] [R1027] [R1101] 1991 - 2000 DEC Poor [R267] 1000 2012 [P1847] [S7811]
australis, Timor 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
australis, Rennell Island 2001 - 2001 1 - 500 [R202] 0 - 0 Unknown No idea 1 2012 [P1849]
australis, New Britain, New Ireland 2001 - 2001 1 - 10,000 Best guess [R202] 0 - 0 Unknown No idea 100 2012 [P1850]
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Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on