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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
Butorides striata (Green-backed Heron)
steini 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
rutenbergi 2001 - 2001 1 - 25,000 Best guess [R190] 1991 - 2001 STA [R190] 250 2012
rhizophorae 2001 - 2001 1 - 10,000 Best guess [R190] 1992 - 2002 STA [R418] 100 2012
degens 2001 - 2001 1 - 10,000 Best guess [R190] 0 - 0 Unknown No idea 100 2012
crawfordi 2001 - 2001 1 - 5,000 [R190] 1991 - 2001 STA [R190] 1 2012
striata, Central & South America 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
striata, South America 2005 - 2011 100,000 - 1,000,000 Best guess [R1092] [R1141] [R1183] [R1191] 2001 - 2010 STA Reasonable [R1191] [R1183] 10000 2012 [P1742]
virescens, Central & E North America 0 - 0 -1 - -1 1966 - 2000 DEC [R563] -1 0 [P1744]
virescens, Mexico 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0 [P1745]
virescens, Central America 2005 - 2005 23,000 - 60,000 [R1114] 0 - 0 Unknown No idea 370 2012 [P1746]
virescens, Caribbean 2006 - 2007 3,080 - 12,300 [R1021] 0 - 0 Unknown No idea 60 2012 [P1747] [S7712]
bahamensis 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0 [P1748]
anthonyi 0 - 0 -1 - -1 1966 - 2000 INC [R563] -1 0 [P1749]
frazari 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0 [P1750]
Ardeola ralloides (Squacco Heron)
ralloides, SW Europe, NW Africa (bre) 1995 - 2005 2,700 - 5,600 Expert opinion [R668] 1995 - 2005 INC Poor [R668] 40 2012
ralloides, C & E Europe, Black Sea & E Mediterranean (bre) 1995 - 2005 42,000 - 76,000 Expert opinion [R668] 1995 - 2005 DEC Poor [R668] 560 2012 [P1703]
ralloides, West & South-west Asia/Sub-Saharan Africa 1987 - 1991 25,000 - 100,000 Best guess [R519] 1990 - 2000 STA No idea [R66] 1000 2012 [P1704]
paludivaga, Sub-Saharan Africa & Madagascar 2006 - 2006 300,000 - 600,000 Expert opinion [R192] [R648] 1991 - 2001 INC? No idea [R910] 4200 2012 [P1705] [T5603]
Ardeola grayii (Indian Pond-heron)
grayii, SW, S Asia 1987 - 1991 100,000 - 1,000,000 Best guess [R519] 0 - 0 Unknown No idea 10000 2012
grayii, Myanmar, Bay of Bengal 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
phillipsi 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
Ardeola bacchus (Chinese Pond-heron)
E, SE & S Asia 2001 - 2001 25,000 - 1,000,000 Best guess [R124] 1981 - 1991 STA [R124] 10000 2012
Ardeola speciosa (Javan Pond-heron)
speciosa 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
continentalis 1987 - 1991 10,000 - 100,000 Best guess [R519] 0 - 0 Unknown No idea 1000 2012
Ardeola idae (Madagascar Pond-heron)
Madagascar & Aldabra/Central & Eastern Africa 2001 - 2001 2,000 - 6,000 Expert opinion [R190] 1995 - 2005 DEC Poor [R64] 35 2012
Ardeola rufiventris (Rufous-bellied Heron)
Central, Eastern & Southern Africa 2006 - 2006 10,000 - 100,000 Best guess [R668] 1990 - 2000 STA No idea [R66] 1000 2012
Egretta rufescens (Reddish Egret)
rufescens, S USA 1991 - 2006 5,000 - 7,000 [R1080] 1991 - 2006 DEC [R1080] 60 2012 [P1577] [S6418]
rufescens, Mexico 0 - 0 1 - 10,000 Best guess [R577] 0 - 0 Unknown No idea 100 2012 [P1578]
rufescens, Central America 2006 - 2006 1 - 10,000 Best guess [R668] 0 - 0 Unknown No idea 100 2012 [P1579] [S6420]
rufescens, Caribbean 2006 - 2010 213 - 213 Expert opinion [R1115] 0 - 0 Unknown No idea 2 2012 [P1580] [S6421]
rufescens, N South America 0 - 0 1 - 10,000 Best guess [R464] 0 - 0 Unknown No idea 100 2012 [P1581]
dickeyi 2007 - 2008 2,250 - 2,260 Expert opinion [R1239] 0 - 0 Unknown No idea 25 2012 [S6423]
Egretta picata (Pied Heron)
Australia - Sulawesi 1995 - 2002 25,000 - 100,000 Best guess [R286] [R341] [R1027] [R1037] 2000 - 2010 STA Poor [R1101] 1000 2012 [P1671] [S7636] [T5422]
Egretta vinaceigula (Slaty Egret)
Central Southern Africa 2005 - 2005 3,000 - 5,000 Expert opinion [R64] 1995 - 2005 DEC Poor [R64] 40 2012
Egretta ardesiaca (Black Heron)
Sub-Saharan Africa 1999 - 1999 25,000 - 100,000 Best guess [R179] 1990 - 2000 INC? No idea [R910] 1000 2012 [T5341]
Egretta tricolor (Tricolored Heron)
tricolor 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0
ruficollis, USA (bre) 0 - 0 293,000 - 293,000 [R387] 1966 - 2000 STA [R563] 2900 2012 [P1587]
ruficollis, Mexico 2006 - 2006 1 - 1,500 Expert opinion [R1115] 0 - 0 Unknown No idea 1 2012 [P1588] [T5344]
ruficollis, Central America 2005 - 2005 3,350 - 6,800 Expert opinion [R1114] 0 - 0 Unknown No idea 50 2012 [P1589]
ruficollis, Caribbean 2006 - 2007 12,000 - 27,400 Expert opinion [R1021] 0 - 0 Unknown No idea 180 2012 [P1590] [S6430]
Egretta novaehollandiae (White-faced Heron)
novaehollandiae 2004 - 2008 10,000 - 100,000 Best guess [R341] [R426] [R1109] [R1149] 0 - 0 Unknown No idea 1000 2012 [P1592] [S6431]
parryi 0 - 0 -1 - -1 0 - 0 Unknown No idea -1 0 [P1593]
Egretta caerulea (Little Blue Heron)
North America 0 - 0 225,000 - 300,000 [R106] 1966 - 2000 DEC [R563] 2600 2012 [P1594]
Mexico 0 - 0 75,000 - 150,000 [R106] 0 - 0 Unknown No idea 1100 2012 [P1595]
Central America 2005 - 2005 701 - 1,500 [R1114] 0 - 0 Unknown No idea 10 2012 [P1596]
Caribbean 2006 - 2007 12,300 - 35,900 [R1021] 0 - 0 Unknown No idea 210 2012 [P1597] [S6436]
South America 2005 - 2011 100,000 - 100,000 Best guess [R1141] [R1158] [R1183] [R1191] 2001 - 2010 STA? No idea [R1183] [R1191] [R1141] [R1158] 1000 2012 [P1598]
Egretta thula (Snowy Egret)
thula 0 - 0 215,000 - 215,000 [R387] 1982 - 1992 STA [R119] 2200 2012 [P1620]
brewsteri 2006 - 2006 100,000 - 1,000,000 Best guess [R668] 1966 - 2000 INC [R563] 10000 2012
thula, Mexico 0 - 0 75,000 - 150,000 [R106] 0 - 0 Unknown No idea 1100 2012 [P1622]
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Copyright Wetlands International 2012

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