LC
Cordilleran Flycatcher Empidonax occidentalis



Taxonomy

Taxonomic note

Taxonomic source(s)
AOU. 1998. Check-list of North American birds. American Ornithologists' Union, Washington, D.C.
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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

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 High
Land mass type Average mass 11.60000038 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,920,000 medium
Extent of Occurrence non-breeding (km2) 963,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Decreasing estimated -
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) 3.7 - - -

Trend justification: This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (data for Empidonax difficilis and E. occidentalis combined, from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Canada N Extant
Mexico N Extant
USA N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Mexico Acahuizotla - Agua del Obispo
Mexico Cebadillas
Mexico Coalcomán-Pómaro
Mexico El Carricito
Mexico Guacamayita
Mexico La Malinche
Mexico Lago de Pátzcuaro
Mexico Las Bufas
Mexico Maderas Chihuahua
Mexico Mesa de Guacamayas
Mexico Monte Escobedo
Mexico Nevado de Colima
Mexico Omiltemi
Mexico Piélagos
Mexico Río Presidio-Pueblo Nuevo
Mexico San Antonio Peña Nevada
Mexico Sierra Chincua
Mexico Sierra de Arteaga
Mexico Sierra de Manantlán
Mexico Sierra de Miahuatlán
Mexico Sierra de Taxco-Nevado de Toluca
Mexico Sierra de Valparaiso
Mexico Sierra Norte
Mexico Sur del Valle de México
Mexico Tacámbaro
Mexico Tancítaro
Mexico Tlaxiaco

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major breeding
Forest Subtropical/Tropical Dry major non-breeding
Forest Subtropical/Tropical Moist Montane major non-breeding
Forest Subtropical/Tropical Moist Montane major breeding
Forest Temperate major breeding
Altitude 1000 - 3500 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2019) Species factsheet: Empidonax occidentalis. Downloaded from http://www.birdlife.org on 22/10/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/10/2019.