Western Kingbird (Tyrannus verticalis) - BirdLife species factsheet

Western Kingbird Tyrannus verticalis

Current view: Data table and detailed info

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	Low
Land mass type		Average mass	40 g

Extent of occurrence (EOO)

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	6,030,000	medium
Extent of Occurrence non-breeding (km2)	2,560,000	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		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)	4.2	-	-	-

Trend justification: This species has undergone a small or statistically insignificant increase over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).

Country/territory distribution

Country/Territory	Occurrence status	Presence	Breeding	Non-breeding	Passage
Bahamas	N	Extant
Belize	N	Extant
Canada	N	Extant
Costa Rica	N	Extant		Yes
Cuba	V	Extant
El Salvador	N	Extant
Guatemala	N	Extant
Honduras	N	Extant
Mexico	N	Extant
Nicaragua	N	Extant
Panama	V	Extant
St Pierre and Miquelon (to France)	V	Extant			Yes
Turks and Caicos Islands (to UK)	N	Extant
USA	N	Extant	Yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Pastureland	suitable	breeding
Artificial/Terrestrial	Pastureland	suitable	non-breeding
Artificial/Terrestrial	Plantations	suitable	non-breeding
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	breeding
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	non-breeding
Forest	Subtropical/Tropical Dry	suitable	non-breeding
Grassland	Subtropical/Tropical Dry	suitable	non-breeding
Grassland	Temperate	suitable	breeding
Savanna	Dry	suitable	breeding
Savanna	Dry	suitable	non-breeding
Shrubland	Subtropical/Tropical Dry	suitable	non-breeding
Shrubland	Subtropical/Tropical Dry	suitable	breeding
Altitude	0 - 2300 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2019) Species factsheet: Tyrannus verticalis. Downloaded from http://www.birdlife.org on 16/12/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/12/2019.