List of Pelecaniformes by population

The population of birds
Lists Anseriformes (waterfowl) Apodiformes (swifts and hummingbirds) Caprimulgiformes (nightjars and relatives) Charadriiformes (gulls and relatives) Ciconiiformes (storks and relatives) Columbiformes (doves and pigeons) Coraciiformes (kingfishers and relatives) Cuculiformes (cuckoos and relatives) Falconiformes (falcons and relatives) Galliformes (gamebirds) Gaviiformes (loons or divers) Gruiformes (cranes and relatives) Passeriformes (perching birds) Pelecaniformes (pelicans and relatives) Phoenicopteriformes (flamingos) Piciformes (woodpeckers and relatives) Podicipediformes (grebes) Procellariiformes (albatrosses and petrels) Psittaciformes (parrots) Sphenisciformes (penguins) Strigiformes (owls) Struthioniformes (ratites) Tinamiformes (tinamous) Trogoniformes (trogons and quetzals)
Key Conservation status   Extinct in the wild (EW)   Critically endangered (CR)   Endangered (EN)   Vulnerable (VU)   Near threatened (NT)   Least concern (LC)   Data deficient (DD)
Related Lists of organisms by population Lists of mammals by population List of Late Quaternary prehistoric bird species List of extinct birds Lists of birds by region
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This is a list of Pelecaniformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.

This list is not comprehensive, as not all Pelecaniformes have had their numbers quantified.

Species by global population

Common name	Binomial name	Population	Status	Trend	Notes	Image
Dwarf ibis	Bostrychia bocagei	190-2,500	CR		Estimate calculated from density and area estimates. Equal to 130-1,700 mature individuals.
Northern bald ibis	Geronticus eremita	200-249	EN		Estimate for mature individuals only. Species is considered regionally extinct in Europe.
Giant ibis	Thaumatibis gigantea	290	CR		Minimum estimate. Equal to 194 mature individuals.
White-eared night-heron	Oroanassa magnifica	350-1,500	EN		Equal to 250-999 mature individuals.
Rough-faced shag	Phalacrocorax carunculatus	350 – 1500	VU
Asian crested ibis	Nipponia nippon	550	EN		Equal to 330 mature individuals.
Bounty shag	Phalacrocorax ranfurlyi	620	VU		Minimum estimate.
White-shouldered ibis	Pseudibis davisoni	1,000	CR		Minimum estimate. Equal to 670 mature individuals.
Fasciated tiger-heron	Tigrisoma fasciatum	1,000-10,000	LC	Unknown	Equal to 670-6,700 mature individuals.
Schrenck's bittern	Ixobrychus eurhythmus	1,000-25,000	LC		Equal to 670-17,000 mature individuals.
Wattled ibis	Bostrychia carunculata	1,000-25,000	LC	Unknown	Equal to 670-17,000 mature individuals.
Chatham shag	Phalacrocorax onslowi	1070	CR
Pitt shag	Phalacrocorax featherstoni	1400	EN
Australasian bittern	Botaurus poiciloptilus	1,500-4,000	VU		Equal to 1,000-2,499 mature individuals.
Flightless cormorant	Phalacrocorax harrisi	1679	VU
Malayan night-heron	Gorsachius melanolophus	2,000-20,000	LC	Unknown	Equal to 1,300-13,000 mature individuals. Subpopulations include 100-10,000 breeding pairs in Taiwan, and 100-10,000 in Japan.
Forest bittern	Zonerodius heliosylus	2,500-9,999	NT		Equal to 1,500-7,000 mature individuals.
Madagascar sacred ibis	Threskiornis bernieri	2,600-3,250	EN		Equal to 1,733-2,166 mature individuals.
Olive ibis	Bostrychia olivacea	3,000-45,000	LC		Estimate is for mature individuals only.
Christmas frigatebird	Fregata andrewsi	3600 – 7200	CR
Black-faced spoonbill	Platalea minor	3,941	EN		Equal to approximately 2,250 mature individuals.
Auckland shag	Phalacrocorax colensoi	4500	VU
Bronze shag	Phalacrocorax chalconotus	5000 – 8000	VU		Numbers may be overestimated.
Shoebill	Balaeniceps rex	5000 – 8000	VU
Red-billed tropicbird	Phaethon aethereus	5000 – 20 000	LC
Southern bald ibis	Geronticus calvus	6,500-8,000	VU		Equal to 3,300-4,000 mature individuals and 1,650-2,000 breeding pairs.
African spoonbill	Platalea alba	7,300-73,000	LC		Estimate is for mature individuals only.
Japanese night-heron	Gorsachius goisagi	7,500-15,000	VU		Equal to 5,000-9,999 mature individuals.
Campbell shag	Phalacrocorax campbelli	8000	VU		Estimate may be dated.
Bank cormorant	Phalacrocorax neglectus	8400	EN
Crowned cormorant	Phalacrocorax coronatus	8700	NT
Abbott's booby	Papasula abbotti	9000	EN
Madagascar crested ibis	Lophotibis cristata	10,000	NT		Equal to 6,700 mature individuals.
Puna ibis	Plegadis ridgwayi	10,000-15,000	LC		Equal to 6,700-10,000 mature individuals.
Sharp-tailed ibis	Cercibis oxycerca	10,000-25,000	LC		Equal to 6,700-17,000 mature individuals.
Dalmatian pelican	Pelecanus crispus	10 000 – 13 900	VU
Spot-billed pelican	Pelecanus philippensis	13 000 – 18 000	NT
Black-headed ibis	Threskiornis melanocephalus	15,000-30,000	NT		Equal to 10,000-19,999 mature individuals. Subpopulation estimates include 10,000 in south Asia, 10,000 in south-east Asia, and 100 in east Asia.
White-backed night-heron	Calherodius leuconotus	25,000-100,000	LC
White-crested tiger-heron	Tigrionrnis leucolopha	25,000-100,000	LC
Black-faced ibis	Theristicus melanopis	25,000-100,000	LC
Ascension frigatebird	Fregata aquila	25 000 – 32 000	VU	Unknown
Japanese cormorant	Phalacrocorax capillatus	25 000 – 100 000	LC	Unknown
Rufescent tiger-heron	Tigrisoma lineatum	27,700-105,500	LC		Equal to 18,000-70,000 mature individuals.
Red-legged cormorant	Phalacrocorax gaimardi	30 000	NT
Nazca booby	Sula granti	30 000	LC		Minimum estimate.
Red-tailed tropicbird	Phaethon rubricauda	32 000	LC		Minimum estimate.
Oriental darter	Anhinga melanogaster	33 000	NT		Minimum estimate.
White-tailed tropicbird	Phaethon lepturus	50 000	LC		Minimum estimate.
Pinnated bittern	Botaurus pinnatus	50,000-499,999	LC		Estimate is for mature individuals only.
Agami heron	Agamia agami	50,000-499,999	VU	Unknown	Calculation may need to be revised. Actual global population may be smaller.
Bare-throated tiger-heron	Tigrisoma mexicanum	50,000-499,999	LC
Green ibis	Mesembrinibis cayennensis	50,000-499,999	LC		Estimate is for mature individuals only.
Eurasian spoonbill	Platelea leucorodia	63,000-65,000	LC	Unknown	European subpopulation includes 20,400-30,500 mature individuals.
Black bittern	Ixobrychus flavicollis	63,000-320,000	LC		Subpopulation at China is 100-100,000 breeding pairs.
Pygmy cormorant	Phalacrocorax pygmeus	85 000 – 180 000	LC
Yellow bittern	Ixobrychus sinensis	100,000-1,000,000	LC	Unknown
Straw-necked ibis	Threskiornis spinicollis	100,000-1,000,000	LC
Peruvian pelican	Pelecanus thagus	100 000 – 1 000 000	NT
Socotra cormorant	Phalacrocorax nigrogularis	110 000	VU
Eurasian bittern	Botaurus stellaris	115,000-340,000	LC		European subpopulation includes 75,300-133,000 mature individuals.
Cinnamon bittern	Ixobrychus cinnamomeus	130,000-2,000,000	LC
American white pelican	Pelecanus erythrorhynchos	180 000	LC
Brown booby	Sula leucogaster	200 000	LC		Minimum estimate.
African sacred ibis	Threskiornis aethiopicus	200,000-450,000	LC		Estimate is for mature individuals only.
Spot-breasted ibis	Bostrychia rara	200,000-510,000	LC
Glossy ibis	Plegadis falcinellus	200,000-2,300,000	LC		This estimate involves the European subpopulation of 56,500-75,400 mature individuals.
White ibis	Eudocimus albus	210,000-360,000	LC		Estimate is for mature individuals only.
Striated heron	Butorides striata	260,000-2,300,000	LC		Equal to 173,000-1,500,000 mature individuals. Will likely need to be revised under recent taxonomic changes.
Red-faced cormorant	Phalacrocorax urile	200 000	LC		Minimum estimate.
Cape cormorant	Phalacrocorax capensis	200 000 – 250 000	NT
Cape gannet	Morus capensis	300 000	VU		Mature population only (~150 000 pairs).
Squacco heron	Ardeola rallodies	370,000-780,000	LC	Unknown	European subpopulation estimated at 30,000-51,700 mature individuals.
Boat-billed heron	Cochlearius cochlearius	500,000-4,999,999	LC
Black-crowned night-heron	Nycticorax nycticorax	570,000-3,730,000	LC		Subpopulations include 120,000-172,000 mature individuals in Europe.
Common little bittern	Ixobrychus minutus	630,000-1,110,000	LC		Estimate is for mature individuals only. Further validation is needed.
Northern gannet	Morus bassanus	950 000 – 1 200 000	LC
Red-footed booby	Sula sula	1 000 000	LC		Minimum estimate.
White-faced ibis	Plegadis chihi	1,200,000	LC
Great cormorant	Phalacrocorax carbo	1 400 000 – 2 900 000	LC
Neotropic cormorant	Phalacrocorax brasilianus	2 000 000	LC
Guanay cormorant	Phalacrocorax bougainvillii	2 500 000 – 4 999 999	NT

See also

• Lists of birds by population
• Lists of organisms by population