HeronConservation

The IUCN-SCC Heron Specialist Group

Conserving Herons

A Conservation Action Plan for the Herons of the World
James A. Kushlan
Table 1. Species and populations of herons showing species conservation status (SCS), distribution,population conservation status (PCS), 1% conservation population threshold, and population estimate.
English Name Scientific Name SCS Population Range PCS 1% Population
Grey Heron Ardea cinerea LC A.c.cinerea SubSahara Africa LC 10000
A.c.cinerea W Europe, NW Africa LC 2700 290000-340000
A.c.cinerea C & E Europe LC 2200 189000-256000
A.c.cinerea C, SW Asia LC
A.c.cinerea S Asia LC 1000 100000
A.c.jouyi E Asia LC 10000
A.c.jouyi Sumatra VU 15 1000-2000
A.c.monicae Mauritania VU 100 7500-12500
A.c.firasa Madagascar, Seychelles EN 50 5000
Great Blue Heron Ardea herodias LC A.h.herodias N, Central America LC 124500
A.h.herodias W North America LC (in above)
A.h.herodias N Mexico LC (in above)
A.h.herodias Baja Mexico LC
A.h.fannini Alaska, W Canada LC 65 6500
A.h.wardi North America LC
A.h.occidentalis Florida, Caribbean VU 1500
A.h.occidentalis Caribbean VU
A.h.occidentalis Central America VU
A.h.cognata Galapagos LC
Cocoi Heron Ardea cocoi LC South America LC 10000
White-necked Heron Ardea pacifica LC Australia, Oceania LC 1000
Great Egret Ardea alba LC A.a.alba Europe VU 470 38000-54000
A.a.alba SW Asia LC 1000
A.a.melanorhynchos Tropical Africa LC 3000 100000-500000
A.a.egretta North America LC 2700 270000
A.a.egretta Mexico LC
A.a.egretta Central America LC
A.a.egretta Caribbean LC
A.a.egretta South America LC
Eastern Great Egret Ardea modesta S Asia (nb) LC 1000
E Asia (nb) LC 1000
Indonesia LC
Australia LC 1000
New Zealand VU 1 100
Intermediate Egret Ardea intermedia LC A.i.intermedia S Asia LC 1000
A.i.intermedia E, SE Asia, C Japan, Indonesia LC 1000
Indonesia LC
A.i.brachyrhyncha SubSahara Africa LC 1000
A.i.plumifera E Indonesia, New Guinea, Australia LC 10000
Black-headed Heron Ardea melanocephala LC Africa LC 3000 100000-500000
Malagasy Heron Ardea humbloti EN Madagascar EN 20 1000-3000
White-bellied Heron Ardea insignis EN SE Asia CE 6 250-1000
Sumatran Heron Ardea sumatrana LC SE Asia LC 1000
Australia VU 75 7500
Goliath Heron Ardea goliath LC SubSahara Africa LC 1000
SW Asia EN 1 50
Purple Heron Ardea purpurea LC A.p.purpurea Tropical Africa LC 880 75000-100000
A.p.purpurea SW, NW Europe, NW Africa LC 120 11500-12100
A.p.purpurea C, E Europe, Mediterranean LC 2200 13500-300000
A.p.purpurea SW Asia (br) LC 250
A.p.madagascariensis Madagascar VU 75 5000-10000
A.p.bournei Cape Verde Island EN 1 <50
A.p.manilensis S Asia LC 250 25000
A.p.manilensis SE, E Asia LC 1000
Cattle Egret Ardea ibis LC A.i.ibis S Africa LC 10000
Tropical Africa LC
NW Africa LC 1300 100000-150000
SW Europe LC 2800 250000-310000
E Mediterranean, SW LC 1000
Asia LC
North America (USA, Canada) LC 750000-1500000
Mexico LC
Central America LC
Caribbean LC
South America LC
A.i.seychellarum Seychelles LC 100
A.i.coromandus S Asia LC
A.i.coromandus E, Se Asia LC 10000
A.i.coromandus Australia, New Zealand, New Guinea LC 10000 100000
Green Heron Butorides virescens LC B. virescens C, E North America LC
B. virescens Mexico LC
B. virescens Central America LC
B. virescens Caribbean LC
B. virescens Bermuda VU 1 30
B.v.bahamensis Bahamas LC
B.v.anthonyi W North America, N Baja California LC
B.v.frazari S Baja California LC
Striated Heron Butorides striata LC B.s.striata Central America (Panama), N South America LC
B.s.striata C South America LC
B.s.striata Bolivia LC
B.s.sundevalli Galapagos LC
B.s.brevipes E Africa, SW Asia LC 250
B.s.atricapilla SubSahara Africa LC 10000
B.s.rutenbergi Madagascar LC 250
B.s.rhizophorae Comoro Islands LC 100
B.s.crawfordi Aldabra, Amirante LC 50 5000
B.s.degens Seychelles LC 100
B.s.albolimbata Chagos Islands, Maldives, Diego Garcia VU 100
B.s.chloriceps India LC 250 25000
B.s.spodiogaster W Sumatra, Andaman, Nicobar LC
B.s.amurensis NE China, SE Russia, Korea, Japan, Ryukyu, Bonin, Taiwan, S China LC
B.s.actophila S China, N Indonesia, N Myanmar LC
B.s.javanica W Indonesia, Indian Ocean, Myanmar, Thailand LC 1000
B.s.moluccara Moluccas LC
B.s.moluccara NW New Guinea, Aru LC
B.s.solomonensis New Ireland, Solomon Islands, Vanuatu, W Fiji LC 250
B.s.idenburgi W Papua LC
B.s.flyensis S New Guinea LC
B.s.stagnatilis N Australia LC
B.s.stagnatilis NW Australia LC
B.s.stagnatilis NE Western Australia LC
B.s.patruelis Tahiti, Society LC 2 100-200
B.s.macrorhyncha E Australia LC
B.s.macrorhyncha SC New Guinea, NE Queensland LC
B.s.carcinophila Taiwan, Philippines, Sulawesi LC
B.s.steini Lesser Sundras, Indonesia LC
Squacco Heron Ardeola ralloides LC A.r.ralloides SW Europe, NW Africa LC 40 2700-5600
A.r.ralloides C, E Europe, E Mediterranean LC 600 24000-76000
A.r.ralloides SW Asia LC 1000
A.r.paludivaga SubSahara Africa, Madagascar LC 4500 300000-600000
Indian Pond Heron Ardeola grayii LC SW Asia S Asia LC 10000
Myanmar, Andaman, Nicobar LC
Maldives VU
Chinese Pond Heron Ardeola bacchus LC E, SE, S Asia LC
Javan Pond Heron Ardeola speciosa LC A.s.speciosa W C Indonesia, S Philippines LC
A.s.continentalis C Thailand, S Indochina LC 1000
Malagasy Pond Heron Ardeola idae EN Madagascar, Aldabra, E Africa EN 40 2000-6000
Rufous-bellied Heron Ardeola rufiventris LC E & S Africa LC 1000
Reddish Egret Egretta rufescens LC E.r.rufescens S USA VU 250 9000-15000
E.r.rufescens Mexico VU 15 1500
E.r.rufescens Central America VU 100
E.r.rufescens Caribbean VU 100
E.r.rufescens N South America VU 275 ≤>2250-3000
E.r.dickeyi San Luis Island, W Mexico VU
Pied Heron Egretta picata LC Oceania LC 1000
Slaty Egret Egretta vinaceigula VU C Africa VU 40 3000-5000
Black Heron Egretta ardesiaca LC SubSahara Africa LC 1000
Madagascar NT
Tricolored Heron Egretta tricolor LC E.t.tricolor N South America LC ≤>180000
E.t.ruficollis USA LC 293000
E.t.ruficollis Mexico LC >1500
E.t.ruficollis Central America LC
E.t.ruficollis Caribbean LC
White-faced Heron Egretta novaehollandiae LC E.n.novaehollandiae New Zealand, Australia, New Guinea, E Indonesia LC >5000
E.n. parryi NW Australia LC
Little Blue Heron Egretta caerulea LC N America LC 2600 225000-300000
Mexico LC 1100 75000-150000
Central America LC
Caribbean LC
South America LC >150000-285000
Snowy Egret Egretta thula LC E.t.thula Central and North America LC 2100 215000
E.t.brewsteri W North America, Baja California LC 10000
E.t.thula Mexico LC 1100 75000-150000
E.t.thula Central America LC
E.t.thula Caribbean LC
E.t.thula South America LC >390000-1170000
Little Egret Egretta garzetta LC E.g.garzetta SubSahara Africa LC 3500 200000-500000
E.g.garzetta W Europe, NW Africa LC 1300 200000-500000
E.g.garzetta C, E Europe LC 580 44000-72400
E.g.garzetta Barbados VU 1 30-60
E.g.garzetta W Asia LC 1000
E.g.garzetta S Asia LC 1500 100000-200000
E.g.garzetta E SE Asia LC 10000
E.g.nigripes Java, New Guinea LC
E.g.immaculata Australia, New Zealand LC 1000
E.g.gularis W Africa LC 1000
E.g.schistacea NE Africa, Red Sea LC 1000
E.g.schistacea SW Asia LC 170 17000
E.g.dimorpha Madagascar LC 130 6000-20000
E.g.dimorpha Aldabra, Amirante LC 60 3000-9000
E.g.dimorpha E Africa LC 100 10000
Chinese Egret Egretta eulophotes VU E Asia VU 30 2600-3400
Eastern Reef Heron Egretta sacra LC E.s.sacra SE Asia, Andaman, Nicobar, China, Taiwan, Korea, Japan, Indonesia, Philippines LC 10000
E.s.albolineata New Caledonia, Loyalty LC 15 1000-2000
Whistling Heron Syrigma sibilatrix LC S.s.sibilatrix South America LC >750-1500
S.s.fostersmithi South America LC >5000-25000
Capped Heron Pilherodius pileatus LC South America LC
Yellow-crowned Night Heron Nyctinassa violacea LC N.v.violacea North America LC 1100 75000-150000
N.v.violacea Mexico, Central America LC
Socorro, W Mexico LC
N.v.calignis Panama, W South America LC 450 >40500-48000
N.v.cayennensis Colombia, NE, E Brazil LC
N.v.bancrofti W Mexico to El Salvador, West Indies LC
N.v.pauper Galapagos LC
Black-crowned Night Heron Nycticorax nycticorax LC N.n.nycticorax W Europe, NW Africa LC 790 61000-97000
C, E Europe, E. Mediterranean LC 1200 92100-138000
C Asia LC 1000
N.n.nycticorax SubSahara Africa, Madagascar LC
N.n.nycticorax S Asia LC 12500 100000-150000
N.n.nycticorax E, SE Asia LC 10000
N.n.nycticorax North America LC 11000 750090-150000
Mexico LC
Central America LC
Caribbean LC
South America LC >150000-750000
N.n.obscurus S South America LC
N.n.falklandicus Falklands-Malvinas LC 80 5700-10800
Reunion Night Heron Nycticorax duboisi EX Reunion EX
Mauritius Night Heron Nycticorax mauritianus EX Mauritius EX
Rodrigues Night Heron Nycticorax megacephalus EX Rodrigues EX
Rufous Night Heron Nycticorax caledonicus LC N.c.caledonicus New Caledonia LC 30 2000-4000
N.c.manillensis Philippines, NE Borneo, Sulawesi LC
N.c.pelewensis Palau, Carolines LC 100
N.c.mandibularis Bismarck, Solomons LC 1000
N.c.hilli Java, Australia, New Guinea LC 10000
White-backed Night Heron Nycticorax leuconotus LC W Africa LC 1000
White-eared Night Heron Gorsachius magnificus EN China EN 6 250-1000
Vietnam EN 1
Japanese Night Heron Gorsachius goisagi EN S Japan; nb: Ryukyu, SE China, Philippines EN 6 250-1000
Malayan Night Heron Gorsachius melanolophus LC G.m.melanolophus SW India LC
G.m.melanolophus Indochina, SW China LC
G.m.melanolophus Philippines LC
G.m.melanolophus Palauan, Philippines LC 100
G.m.melanolophus Nicobar LC 100
South American Bittern Botaurus pinnatus LC B.p.pinneatus Central America, N South America LC
B.p.caribaeus E. Mexico, Belize LC
North American Bittern Botaurus lentiginosus LC North America LC 20000 2980000
European Bittern Botaurus stellaris LC B.s.stellaris W Europe, NW Africa LC 900 5850-6700
C E Europe, E Mediterranean LC
W C Asia ( nb) LC 1000
C Asia (nb) LC
S, E Asia LC LC 1000
Australasian Bittern Botaurus poiciloptilus EN B.s.capensis S Africa EN 50 5000
Australia VU 2500-10000
Tasmania VU
New Zealand EN 580-725
New Caledonia, Loyalty EN >50
Streaked Bittern Ixobrychus involucris LC N South America LC 10000
S South America LC
Least Bittern Ixobrychus exilis LC I.e.exilis N, Central America, Caribbean LC 1300 128000
I.e.pullus Sonora, NW Mexico LC
I.e.bogotensis Colombia LC 5 150-750
I.e.erythromelas N South America to Paraguay LC
I.e.peruvianus C W Peru LC
Little Bittern Ixobrychus minutus LC I.m.minutus W Europe, NW Africa VU 150 11900-17900
I.m.minutus C, E Europe, NE Africa LC 2200 110000-325000
I.m.minutus W, SW Asia LC 1000
I.m.minutus S Asia LC 250
I.m.payesii SubSahara Africa LC 1000
I.m.podiceps Madagascar VU 90 3000-15000
I.m.dubius SW, E Australia, New Guinea LC 75 >7500
I.m.novaezelandiae Australasia EX
Yellow Bittern Ixobrychus sinensis LC Seychelles LC 3 <300
S Asia LC
E, SE Asia LC 10000
Schrenck’s Bittern Ixobrychus eurhythmus LC E, SE Asia LC 250
Cinnamon Bittern Ixobrychus cinnamomeus LC S Asia LC
SE Asia, Taiwan, S Japan LC 1000
Dwarf Bittern Ixobrychus sturmii LC SubSahara Africa LC 1000
Black Bittern Ixobrychus flavicollis LC I.f.flavicollis S Asia LC 1000
I.f.flavicollis E, SE Asia LC 1000
I.f.australis Australia, New Guinea, Bismarck VU 200 >20000
I.f.australis Timor LC
I.f.australis Runnell LC 5 <500
I.f.woodfordi New Britain, New Ireland LC 100
I.f.australis Solomon LC 100
Zigzag Heron Zibrillus undulatus LC South America LC
Bare-throated Tiger Heron Tigrisoma mexicanum LC T.m.mexicanum C & N South America LC 100 10000
T.m.mexicanum Sonora, S. Mexico LC
Fasciated Tiger Heron Tigrisoma fasciatum LC T.f.fasciatum SE Brazil, NE Argentina LC 100
T.f.salmoni C. America, NW, W South America LC
T.f.pallescens NW Argentina LC
Rufescent Tiger Heron Tigrisoma lineatum LC T.l.lineatum W Mexico, W Ecuador, N Bolivia, E Brazil LC
T.l.marmoratum C Bolivia, E Brazil, NE Argentina LC
New Guinea Tiger Heron Zonerodius heliosylus NT New Guinea, New Britain NT 100
White-crested Tiger Heron Tigriornis leucolophus DD W Africa LC 1000
Agami Heron Agamia agami LC Central, South America LC
Boat-billed Heron Cochlearius cochlearius LC C.c.cochlearius E Panama, Guyana, Amazonia, NE Argentina LC
C.c.zeledoni W Central Mexico LC
C.c.phillipsi E Mexico, Belize LC
C.c.ridgwayi S Mexico, W Honduras, El Salvador LC
C.c.panamensis Costa Rica, Panama LC