White-throated Magpie-jay Cyanocorax formosus


Taxonomic note

Cyanocorax formosus (del Hoyo and Collar 2016) was previously listed as Calocitta formosa.

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

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

Red List history
Year Category Criteria
2020 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 not a migrant Forest dependency Medium
Land mass type Average mass 210 g

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 746,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 500000-4999999 poor estimated 2016
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 - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 7.5 - - -

Population justification: The global population is estimated to number 500,000-4,999,999 mature individuals (Partners in Flight 2019).

Trend justification: The population is thought to be stable (Partners in Flight 2019).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Costa Rica N Extant Yes
El Salvador N Extant Yes
Guatemala N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes
Nicaragua N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Guatemala Atitlan
Guatemala Cuilco
Guatemala Sierra de las Minas - Motagua
Guatemala Tacana - Tajumulco
Guatemala Santiaguito Volcano
Costa Rica Guanacaste lowlands
Costa Rica Nicoya Peninsula
Nicaragua Apante Hill
Nicaragua Chocoyero - El Brujo - Montibelli and adjacent landscape
Nicaragua Momotombo Volcanic Complex
Nicaragua San Cristóbal-Casita-Chonco Volcanic Complex
Nicaragua Estero Real Delta and Apacunca Plains
Nicaragua Domitila
Nicaragua Juan Venado Island
Nicaragua Tisma Lagoon
Nicaragua Escalante River-Chococente-Tecomapa
Nicaragua Quirragua Mountains and adjacent landscape
Nicaragua Maderas Volcano
Nicaragua Dipilto-Jalapa Mountain Range
Nicaragua Los Guatuzos
Nicaragua Miraflor
Nicaragua Mombacho Volcano
Nicaragua Musun Hill
Guatemala Lake Güija
Guatemala Monterrico - Río La Paz
El Salvador Cinquera Forest
El Salvador El Imposible Forest
El Salvador Deininger
El Salvador Jiquilisco and Jaltepeque
El Salvador La Joya
El Salvador Lake Olomega
El Salvador Los Cóbanos
El Salvador Río Sapo/Perquín
El Salvador San Diego and La Barra
El Salvador The Balsam Range
El Salvador Conchagua Volcano
El Salvador San Miguel Volcano/El Jocotal Lagoon
El Salvador San Salvador Volcano
El Salvador Barra de Santiago
El Salvador San Vicente Volcano
El Salvador Cerrón Grande
El Salvador Jucuarán Hills
El Salvador La Unión Bay
El Salvador The Volcans and San Marcelino
Mexico Chamela - Cuitzmala
Mexico La Encrucijada
Mexico La Sepultura
Mexico Laguna de Chacahua - Pastoría
Mexico Laguna de Manialtepec
Mexico Laguna Pampa El Cabildo
Mexico Lagunas Costeras de Guerrero
Mexico Valle de Tehuacán - Cuicatlán
Mexico Presa Cajón de Peñas
Mexico Tancítaro
Honduras La Botija
Honduras El Jicarito
Honduras Chismuyo/Coyolito
Mexico Istmo de Tehuantepec - Mar Muerto
Mexico Papalutla, Sierra de Tecaballo
Mexico Cuenca baja del Río Papagayo
Mexico Sierra de Petatlán

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Dry major resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Shrubland Subtropical/Tropical Dry major resident
Altitude 0 - 1500 m Occasional altitudinal limits  

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

Recommended citation
BirdLife International (2021) Species factsheet: Cyanocorax formosus. Downloaded from on 24/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 24/10/2021.