LC
Great Horned Owl Bubo virginianus



Taxonomy

Taxonomic note
Bubo virginianus and B. magellanicus (del Hoyo and Collar 2014) were previously lumped as B. virginianusfollowing 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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2014 Least Concern
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 81,800,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Stable 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) 10.6 - - -

Trend justification: This species has had stable population trends over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007). Note, however, that these surveys cover less than 50% of the species's range in North America, which itself only comprises a proportion of the global range.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Belize N Extant Yes
Bermuda (to UK) V Extant
Bolivia N Extant Yes
Brazil N Extant Yes
Canada N Extant Yes
Colombia N Extant Yes
Costa Rica N Extant Yes
Ecuador N Extant Yes
El Salvador N Extant Yes
Falkland Islands (Malvinas) V Extant
French Guiana N Extant Yes
Guatemala N Extant Yes
Guyana N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes
Nicaragua N Extant Yes
Panama V Extant
Paraguay N Extant Yes
Peru N Extant Yes
South Georgia & the South Sandwich Islands V Extant
St Pierre and Miquelon (to France) N Extant Yes
Suriname N Extant Yes
Uruguay N Extant Yes
USA N Extant Yes
Venezuela 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 Arable Land suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Desert Temperate suitable resident
Forest Boreal suitable resident
Forest Subtropical/Tropical Dry suitable resident
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane suitable resident
Forest Subtropical/Tropical Swamp suitable resident
Forest Temperate suitable resident
Rocky areas (eg. inland cliffs, mountain peaks) suitable resident
Savanna Dry suitable resident
Savanna Moist suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Shrubland Subtropical/Tropical High Altitude suitable resident
Altitude 0 - 4000 m Occasional altitudinal limits (max) 4500 m

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

Recommended citation
BirdLife International (2017) Species factsheet: Bubo virginianus. Downloaded from http://www.birdlife.org on 18/12/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/12/2017.