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
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita
Guyana Shell Beach
Mexico Complejo de Humedales del Noroeste de Chihuahua
Mexico Complejo de Presas de Río Fuerte
Mexico Estero Cardonal
Mexico Humedales Costeros del Norte de la Península de Yucatán
Mexico Lagunas del Playón de Mismaloya
Mexico Marismas Nacionales
Mexico Sisal-Chuburna
Mexico Sistema Lagunar Playas de Catazajá
Mexico Sur de Quintana Roo
Nicaragua Juan Venado Island
Trinidad and Tobago Caroni Swamp

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  

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

Recommended citation
BirdLife International (2019) Species factsheet: Egretta thula. Downloaded from http://www.birdlife.org on 20/03/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/03/2019.