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LC
Snowy Egret Egretta thula

IUCN Red List history

Year Category
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 Does not normally occur in forest
Land mass type   Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 17,800,000 medium
Extent of Occurrence non-breeding (km2) 17,800,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals poor Estimated 2009
Population trend Increasing -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 6.8 - - -
Trend justification: The overall population trend is increasing, although some populations may be stable and others have unknown trends (Wetlands International 2006). This species has undergone a large and statistically significant increase over the last 40 years in North America (541% increase over 40 years, equating to a 59.1% increase per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007) Note, however, that these surveys cover less than 50% of the species's range in North America.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
American Samoa Vagrant Extant      
Anguilla (to UK) Native Extant      
Antigua and Barbuda Native Extant      
Argentina Native Extant      
Aruba (to Netherlands) Native Extant      
Bahamas Native Extant      
Barbados Native Extant      
Belize Native Extant   Yes  
Bermuda (to UK) Native Extant Yes    
Bolivia Native Extant      
Bonaire, Sint Eustatius and Saba (to Netherlands) Native Extant      
Brazil Native Extant      
Canada Native Extant Yes    
Cayman Islands (to UK) Native Extant      
Chile Native Extant      
Colombia Native Extant      
Costa Rica Native Extant   Yes  
Cuba Native Extant      
Curaçao (to Netherlands) Native Extant      
Dominica Native Extant      
Dominican Republic Native Extant      
Ecuador Native Extant      
El Salvador Native Extant      
Falkland Islands (Malvinas) Vagrant Extant      
French Guiana Native Extant      
Grenada Native Extant Yes    
Guadeloupe (to France) Native Extant      
Guatemala Native Extant      
Guyana Native Extant      
Haiti Native Extant      
Honduras Native Extant      
Iceland Vagrant Extant      
Jamaica Native Extant Yes    
Martinique (to France) Native Extant      
Mexico Native Extant      
Montserrat (to UK) Native Extant      
Nicaragua Native Extant      
Panama Native Extant      
Paraguay Native Extant      
Peru Native Extant      
Portugal Vagrant Extant      
Puerto Rico (to USA) Native Extant Yes    
Sint Maarten (to Netherlands) Native Extant      
South Africa Vagrant Extant      
South Georgia & the South Sandwich Islands Vagrant Extant      
St Helena (to UK) Vagrant Extant      
St Kitts and Nevis Native Extant      
St Lucia Native Extant      
St Martin (to France) Native Extant      
St Pierre and Miquelon (to France) Vagrant Extant     Yes
St Vincent and the Grenadines Native Extant      
Suriname Native Extant      
Trinidad and Tobago Native Extant      
Turks and Caicos Islands (to UK) Native Extant      
United Kingdom Vagrant Extant      
Uruguay Native Extant Yes    
USA Native Extant Yes    
Venezuela Native Extant      
Virgin Islands (to UK) Native Extant   Yes  
Virgin Islands (to USA) Native Extant   Yes  

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita site factsheet
Guyana Shell Beach site factsheet
Nicaragua Juan Venado Island site factsheet
Trinidad and Tobago Caroni Swamp site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Intertidal Salt Marshes (Emergent Grasses) suitable breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable non-breeding
Altitude 0 - 4000 m Occasional altitudinal limits  

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Wearing apparel, accessories Whole Adults and juveniles Wild Subsistence, National Non-trivial Historical
Wearing apparel, accessories Whole Adults and juveniles Wild International Non-trivial Historical

Recommended citation
BirdLife International (2014) Species factsheet: Egretta thula. Downloaded from http://www.birdlife.org on 23/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/07/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Ardeidae (Herons and egrets)
Species name author (Molina, 1782)
Population size mature individuals
Population trend Increasing
Distribution size (breeding/resident) 17,800,000 km2
Country endemic? No
Links to further information
- Summary information on this species