LC
Pacific Reef-egret Egretta sacra



Taxonomy

Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2018 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Low
Land mass type Average mass 383.0 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 88,800,000
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 6.6 - - -

Population justification: The global population is estimated to number 100,000-1,000,000 individuals (Delaney and Scott 2006), while national population estimates include: c.100-10,000 breeding pairs in Taiwan, c.100-10,000 breeding pairs and < c.1,000 wintering individuals in Korea and c.100-100,000 breeding pairs in Japan (Brazil 2009).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Australia N Extant
Bangladesh N Extant
Brunei N Extant
Cambodia N Extant
China (mainland) N Extant
Christmas Island (to Australia) N Extant
Cocos (Keeling) Islands (to Australia) N Extant Yes
Cook Islands N Extant Yes
Fiji N Extant Yes
French Polynesia N Extant
Guam (to USA) N Extant Yes
India N Extant
Indonesia N Extant
Japan N Extant
Malaysia N Extant
Marshall Islands N Extant Yes
Micronesia, Federated States of N Extant Yes
Myanmar N Extant
Nauru V Extant
New Caledonia (to France) N Extant
New Zealand N Extant Yes
North Korea N Extant
Northern Mariana Islands (to USA) N Extant Yes
Palau N Extant Yes
Papua New Guinea N Extant
Philippines N Extant
Singapore N Extant
Solomon Islands N Extant Yes
South Korea N Extant
Taiwan, China N Extant
Thailand N Extant
Timor-Leste N Extant Yes
Tonga N Extant
Vietnam N Extant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable non-breeding
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major non-breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major breeding
Marine Intertidal Mud Flats and Salt Flats suitable non-breeding
Marine Intertidal Mud Flats and Salt Flats suitable breeding
Marine Intertidal Rocky Shoreline major non-breeding
Marine Intertidal Rocky Shoreline major breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc marginal resident
Marine Intertidal Shingle and/or Pebble Shoreline and/or Beaches marginal resident
Marine Intertidal Tidepools suitable non-breeding
Marine Intertidal Tidepools suitable breeding
Marine Neritic Coral Reef - Back Slope suitable non-breeding
Marine Neritic Coral Reef - Back Slope suitable breeding
Marine Neritic Coral Reef - Foreslope (Outer Reef Slope) suitable non-breeding
Marine Neritic Coral Reef - Foreslope (Outer Reef Slope) suitable breeding
Marine Neritic Coral Reef - Inter-Reef Rubble Substrate suitable non-breeding
Marine Neritic Coral Reef - Inter-Reef Rubble Substrate suitable breeding
Marine Neritic Coral Reef - Inter-Reef Soft Substrate suitable non-breeding
Marine Neritic Coral Reef - Inter-Reef Soft Substrate suitable breeding
Marine Neritic Coral Reef - Lagoon suitable non-breeding
Marine Neritic Coral Reef - Lagoon suitable breeding
Marine Neritic Coral Reef - Outer Reef Channel suitable non-breeding
Marine Neritic Coral Reef - Outer Reef Channel suitable breeding
Marine Neritic Estuaries suitable non-breeding
Marine Neritic Estuaries suitable breeding
Altitude   Occasional altitudinal limits  

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2019) Species factsheet: Egretta sacra. Downloaded from http://www.birdlife.org on 24/03/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/03/2019.