Grey Vireo (Vireo vicinior) | Details | BirdLife International

Grey Vireo Vireo vicinior

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
2019	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	13 g

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,490,000 km²	medium
Extent of Occurrence (non-breeding)	704,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	460000 mature individuals	poor	estimated	2016
Population trend	increasing	-	estimated	-
Rate of change over the past 10 years/3 generations (longer of the two periods)	90.2%	-	-	-
Generation length	4.2 years	-	-	-

Population justification: Partners in Flight estimate the global population to number 460,000 mature individuals (A. Panjabi in litt. 2017).

Trend justification:

This species has undergone a non-significant increase over the last 50 years in North America (177% increase between 1966 and 2015 based on the North American Breeding Bird Survey [Sauer et al. 2017], or 75% increase between 1970 and 2014 based on Partners in Flight [A. Panjabi in litt. 2017]). Recent trends, however, suggest a very large, significant increase of 90.2% over the last three generations (Sauer et al. 2017).

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Mexico	extant	native		yes	yes
USA	extant	native		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	suitable	breeding
Savanna	Dry	suitable	breeding
Savanna	Dry	suitable	non-breeding
Shrubland	Subtropical/Tropical Dry	major	breeding
Shrubland	Subtropical/Tropical Dry	major	non-breeding
Shrubland	Subtropical/Tropical High Altitude	suitable	breeding
Altitude	1000 - 1700 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Grey Vireo Vireo vicinior. Downloaded from https://datazone.birdlife.org/species/factsheet/grey-vireo-vireo-vicinior 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.