American Grey Flycatcher (Empidonax wrightii) | Details

American Grey Flycatcher Empidonax wrightii

Current view: Data table and detailed info

Taxonomy

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
2021	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	medium
Land-mass type		Average mass	12 g

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,820,000 km²	medium
Extent of Occurrence (non-breeding)	1,370,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	2900000 mature individuals	poor	estimated	2019
Population trend	increasing	-	estimated	-
Rate of change over the past 10 years/3 generations (longer of the two periods)	25%	-	-	-
Generation length	2.4 years	-	-	-

Population justification: The global population is estimated to number 2,900,000 mature individuals (Partners in Flight 2019).

Trend justification: The species has been increasing between 1970 and 2017, at an average rate of 2.2% per year (Partners in Flight 2019; Rosenberg et al. 2019). Short-term trends suggest a rate of increase of 25% over the past ten years (Pardieck et al. 2018).

Country/territory distribution

Country/Territory	Presence	Origin	Breeding visitor	Non-breeding visitor	Passage migrant
Canada	extant	native	yes
Mexico	extant	native		yes	yes
USA	extant	native	yes	yes	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	major	non-breeding
Forest	Subtropical/Tropical Dry	major	breeding
Forest	Temperate	suitable	breeding
Shrubland	Subtropical/Tropical Dry	major	non-breeding
Shrubland	Subtropical/Tropical Dry	major	breeding
Shrubland	Temperate	suitable	breeding
Altitude	0 - 2500 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: American Grey Flycatcher Empidonax wrightii. Downloaded from https://datazone.birdlife.org/species/factsheet/american-grey-flycatcher-empidonax-wrightii on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 22/12/2024.