LC
Grey Hawk Buteo plagiatus



Taxonomy

Taxonomic note

Buteo nitidus and B. plagiatus (del Hoyo and Collar 2014) were previously lumped as B. nitidus following AOU (2006), the gender agreement of which follows David and Gosselin (2002a), and before then were placed in the genus Asturina following AOU (1998), and before then were split as A. nitida and A. plagiata following Sibley and Monroe (1990, 1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions 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
2014 Least Concern
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,550,000 medium
Extent of Occurrence non-breeding (km2) 3,060,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 2000000 medium 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) 6 - - -

Population justification: The global population is estimated to number 2 million 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
Belize N Extant Yes
Costa Rica N Extant Yes
El Salvador N Extant Yes
Guatemala N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes Yes
Nicaragua N Extant Yes
USA N Extant 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 suitable breeding
Forest Subtropical/Tropical Dry suitable non-breeding
Forest Subtropical/Tropical Moist Lowland suitable breeding
Forest Subtropical/Tropical Moist Lowland suitable non-breeding
Savanna Dry suitable breeding
Savanna Dry suitable non-breeding
Savanna Moist suitable breeding
Savanna Moist suitable non-breeding
Altitude 0 - 800 m Occasional altitudinal limits (max) 1300 m

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

Recommended citation
BirdLife International (2021) Species factsheet: Buteo plagiatus. Downloaded from http://www.birdlife.org on 18/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/10/2021.