LC
Yellow-crowned Night-heron Nyctanassa violacea



Taxonomy

Taxonomic source(s)
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.
SACC. 2005 and updates. 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
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 -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 36,200,000 medium
Extent of Occurrence non-breeding (km2) 31,900,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend 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) 5.1 - - -

Trend justification: The overall population trend is stable, although some populations have unknown trends (Wetlands International 2006). This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (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
Anguilla (to UK) N Extant
Antigua and Barbuda N Extant
Aruba (to Netherlands) N Extant
Bahamas N Extant
Barbados N Extant
Belize N Extant
Bonaire, Sint Eustatius and Saba (to Netherlands) N Extant
Brazil N Extant
Canada N Extant
Cayman Islands (to UK) 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
French Guiana N Extant
Grenada N Extant
Guadeloupe (to France) N Extant
Guatemala N Extant
Guyana N Extant
Haiti N Extant
Honduras N Extant
Jamaica N Extant Yes
Martinique (to France) N Extant
Mexico N Extant
Montserrat (to UK) N Extant
Nicaragua N Extant
Panama N Extant
Peru N Extant
Puerto Rico (to USA) N Extant
Sint Maarten (to Netherlands) N Extant
St Barthelemy (to France) N 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 Yes
St Vincent and the Grenadines N Extant
Suriname N Extant
Trinidad and Tobago N Extant
Turks and Caicos Islands (to UK) N Extant
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
Bermuda (to UK) Cooper's Island and Castle Islands
Bahamas Great Inagua
Bahamas Harrold and Wilson Ponds National Park
Bahamas Grog Pond
Bahamas Long Island and Hog Cay
St Vincent and the Grenadines Ashton Wetland
St Vincent and the Grenadines Mustique Island
Bahamas Booby Island
Bahamas Cay Sal
Bahamas Booby Rocks and Pirates Bay
Bahamas Southern Great Lake
Bahamas Low Cay, High Cay and Sandy Hook
Bahamas Salt Cay
Bahamas Driggs Hill to Mars Bay
Bahamas Stafford Creek to Andros Town
St Lucia Castries and Dennery Waterworks Reserve and Marquis
Belize Belize Off-shore and Barrier Islands
Belize Rio Bravo CMA Gallon Jug Estate
Belize Northeastern Belize
Belize Crooked Tree and associated wetlands
Belize Maya Mountains and southern reserves
Belize Belize Coastal and near shore islands
Bahamas Mangrove Cay
Bahamas Nine Tasks Blue Hole
Antigua and Barbuda McKinnons Salt Pond
Antigua and Barbuda Valley Church Bay
Antigua and Barbuda Potworks Dam
Antigua and Barbuda Bethesda Dam
Antigua and Barbuda Offshore Islands
Costa Rica Nicoya Gulf mangroves and coastal areas
St Lucia Pitons (Qualibou and Canaries)
St Lucia Point Sables
St Lucia Iyanola and Grande Anses, Esperance and Fond D'ors
St Lucia Mandelé Protected Landscape
Anguilla (to UK) Dog Island
Anguilla (to UK) Scrub Island
Virgin Islands (to USA) Great Pond
Virgin Islands (to USA) Magens Bay
Virgin Islands (to USA) Southgate and Green Cay
Anguilla (to UK) Long Salt Pond
Anguilla (to UK) Prickly Pear (East and West)
Virgin Islands (to USA) John Brewer's Bay
Bahamas North Atlantic Abaco Cays
Bahamas Cat Island Wetlands
Trinidad and Tobago Caroni Swamp
Mexico Humedales Costeros del Norte de la Península de Yucatán
Mexico Humedales de Alvarado
Mexico La Encrucijada
Mexico Laguna de Mecoacán
Mexico Laguna de Términos
Mexico Pantanos de Centla
Mexico Sur de Quintana Roo
Guyana Shell Beach
Jamaica Font Hill
Mexico Bahía de Ceuta-Cospita
Mexico Presa de Valsequillo
Brazil Mangue Seco

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 Intertidal Salt Marshes (Emergent Grasses) suitable non-breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Altitude 0 - 800 m Occasional altitudinal limits  

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

Recommended citation
BirdLife International (2020) Species factsheet: Nyctanassa violacea. Downloaded from http://www.birdlife.org on 28/05/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/05/2020.