


Great Horned Owl
Bubo virginianus
Silhouette: Steven Traver · PhyloPic
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAves (Birds)
- OrderStrigiformes (Owls)
- FamilyStrigidae (Typical Owls)
- GenusBubo (Typical Eagle-Owls and Horned Owls)
- SpeciesBubo virginianus (Great Horned Owl)
In 3 days ~10% in a week ~20%
About the Great Horned Owl
The great horned owl (Bubo virginianus), also known as the tiger owl (originally derived from early naturalists' description as the "winged tiger" or "tiger of the air") or the hoot owl, is a large owl native to the Americas. It is an extremely adaptable bird with a vast range and is the most widely distributed true owl in the Americas. Its diet consists primarily of rabbits and hares, rats and mice, and voles; it remains one of the few regular predators of skunk. Hunting also includes rodents, larger mid-sized mammals, birds, reptiles, amphibians, and invertebrates.
In ornithological study, the great horned owl is often compared to the Eurasian eagle-owl (Bubo bubo), a closely related species, which occupies the same ecological niche in Eurasia despite its notably larger size. The great horned owl is also compared to the red-tailed hawk (Buteo jamaicensis), with which it often shares similar habitat, prey, and nesting habits by day; thus the red-tailed hawk is something of a diurnal ecological equivalent. The great horned owl is one of the earliest nesting birds in North America, often laying eggs weeks or even months before other raptorial birds.
The great horned... Wikipedia →
Recent sightings of Great Horned Owl in San Francisco
LIVEiNaturalistGlobal Distribution
Parks Where Found
Cities Where Found
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toluca | 🇲🇽 México | |
| 2 | Phoenix | 🇺🇸 United States | |
| 3 | Edmonton | 🇨🇦 Canada | |
| 4 | Denver | 🇺🇸 United States | |
| 5 | Los Angeles | 🇺🇸 United States | |
| 6 | Calgary | 🇨🇦 Canada | |
| 7 | Sacramento | 🇺🇸 United States | |
| 8 | Mesa | 🇺🇸 United States | |
| 9 | San Francisco | 🇺🇸 United States | |
| 10 | Austin | 🇺🇸 United States |
Zoos & Centres Where Found
Closest Relatives at San Francisco
Before you go
What are the chances of seeing a Great Horned Owl in San Francisco?
Rare
Under 5% of wildlife watchers report a Great Horned Owl sighting in San Francisco on a given day, based on 4,417 verified sightings from GBIF citizen-science data. It is the 146th most-seen of the 375 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
When is the best time to see a Great Horned Owl in San Francisco?
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Great Horned Owl in San Francisco on a given day, so our monthly data shows no clear season.
What time of day is best to see a Great Horned Owl?
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Great Horned Owl sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Is San Francisco the best place to see a Great Horned Owl?
9th of 37
Of the 37 cities where we can rate Great Horned Owl sightings, San Francisco ranks 9th at under 5%. The best odds are in Toluca (México, about 10%), Phoenix (United States, about 10%) and Edmonton (Canada, about 10%).
Where does the Great Horned Owl sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Great Horned Owl is recorded against all the birds logged in San Francisco (4,417 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.