LC
Snowy Egret Egretta thula



Taxonomy

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

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

Red List history
Year Category Criteria
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 Does not normally occur in forest
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 51,400,000 medium
Extent of Occurrence non-breeding (km2) 44,000,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Increasing 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) 6.8 - - -

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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Jamaica Yallahs
Puerto Rico (to USA) Vaqueria
Bahamas Great Inagua
Bahamas Harrold and Wilson Ponds National Park
Bahamas Lucayan National Park
Bahamas Long Island and Hog Cay
Bahamas Grog Pond
Sint Maarten (to Netherlands) Fresh Pond, Sint Maarten
Canada Bon Portage Island
St Vincent and the Grenadines Ashton Wetland
St Vincent and the Grenadines Mustique Island
St Vincent and the Grenadines La Soufrière National Park
Bahamas Southern Great Lake
Bahamas Low Cay, High Cay and Sandy Hook
Bahamas South Beach Tidal Flats
Barbados Graeme Hall Swamp
Nicaragua Juan Venado Island
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita
Nicaragua Bosawas
Aruba (to Netherlands) Tierra del Sol Salina
Aruba (to Netherlands) Bubali Wetlands
Bonaire, Sint Eustatius and Saba (to Netherlands) Klein Bonaire, Bonaire
Antigua and Barbuda McKinnons Salt Pond
Antigua and Barbuda Fitches Creek Bay
Antigua and Barbuda Valley Church Bay
Antigua and Barbuda Potworks Dam
Antigua and Barbuda Bethesda Dam
Antigua and Barbuda Christian Cove
Antigua and Barbuda Hanson's Bay – Flashes
Bahamas Mangrove Cay
Cuba Las Picuas - Del Cristo Cay
Cuba Humedal Sur de Pinar del Río
Cuba Delta del Cauto
Cuba Cayo Sabinal, Ballenatos y Manglares de la Bahía de Nuevitas
Paraguay Parque Nacional Tinfunqué - Estero Patiño
St Lucia Point Sables
Virgin Islands (to USA) Great Pond
Virgin Islands (to USA) Southgate and Green Cay
Anguilla (to UK) Cove Pond
Anguilla (to UK) Long Salt Pond
Paraguay Río Negro - Pantanal
Cayman Islands (to UK) Central Mangrove Wetland
Virgin Islands (to USA) John Brewer's Bay
Jamaica Black River Great Morass
Bahamas Conception Island National Park
Trinidad and Tobago Caroni Swamp
Cuba Delta del Mayarí
Mexico Humedales Costeros del Norte de la Península de Yucatán
Mexico Sur de Quintana Roo
Guyana Mapari - Kanuku Mountain
Guyana Crane Pond- Rupununi River
Guyana Shell Beach
Jamaica Font Hill
Bahamas Joulter Cays
Dominican Republic Jaragua National Park
Mexico Cuenca baja del Río Papagayo
Mexico Presa de Valsequillo
Mexico Lagunas del Playón de Mismaloya
Mexico Sistema Lagunar Superior-Inferior
Mexico Sisal-Chuburna
Mexico Complejo de Humedales del Noroeste de Chihuahua
Mexico Complejo de Presas de Río Fuerte
Mexico Sistema Lagunar Playas de Catazajá
Mexico Bahía Lechuguilla
Mexico Marismas Nacionales
Mexico Santiaguillo
Mexico Estero Cardonal
Brazil Mangue Seco
Colombia El Encanto de Guanapalo

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Intertidal Salt Marshes (Emergent Grasses) suitable non-breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable 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 non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Altitude 0 - 4000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2020) Species factsheet: Egretta thula. Downloaded from http://www.birdlife.org on 15/08/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 15/08/2020.