Great Gray Owl
Strix nebulosa
Silhouette: Sharon Wegner-Larsen · PhyloPic
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAves (Birds)
- OrderStrigiformes (Owls)
- FamilyStrigidae (Typical Owls)
- GenusStrix (Wood Owls and Allies)
- SpeciesStrix nebulosa (Great Gray Owl)
About the Great Gray Owl
The great grey owl (Strix nebulosa) (also great gray owl in American English) is a true owl, and is the world's largest species of owl by length. It is distributed across the Northern Hemisphere and is the only species in the genus Strix found in both Eastern and Western Hemispheres.
Adults have large, rounded heads with grey faces and yellow eyes with darker circles around them. The underparts are light with dark streaks; the upper parts are grey with pale bars. This owl does not have ear tufts and has the largest facial disc of any raptor. A white collar or "bow-tie" is just below the beak. The long tail tapers to a rounded end.
In length, the great grey owl is believed to exceed the Eurasian eagle-owl and Blakiston's fish owl as the world's largest owl. The great grey is outweighed by those two species and several others, including most of the genus Bubo. Much of its size is deceptive, since this species' fluffy feathers, large head, and the longest tail of any extant owl obscure a body lighter than that of most other large owls. The length ranges from 61 to 84 cm (24 to 33 in), averaging 72 cm (28 in) for females and 67 cm (26 in) for males. The wingspan can... Wikipedia →
Recent sightings of Great Gray Owl in Glacier National Park
LIVEiNaturalistClosest Relatives at Glacier National Park
Barred Owl
Strix varia
Great Horned Owl
Bubo virginianus
Northern Pygmy-Owl
Glaucidium gnoma
Western Screech-Owl
Megascops kennicottii
Snowy Owl
Bubo scandiacus
Northern Saw-whet Owl
Aegolius acadicus
Flammulated Owl
Psiloscops flammeolus
Short-eared Owl
Asio flammeus
Boreal Owl
Aegolius funereus
Global Distribution
Warmer areas are where this animal is recorded most often.
Parks Where Found
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States | |
| 2 | Białowieża National Park | 🇵🇱 Poland | |
| 3 | Wrangell-St. Elias National Park | 🇺🇸 United States | |
| 4 | Isle Royale National Park | 🇺🇸 United States | |
| 5 | Denali National Park | 🇺🇸 United States |