Animalia > Chordata > Aves > Strigiformes > Strigidae > Strix > Strix nebulosa

Strix nebulosa (Great Grey Owl; Great Gray Owl)

Language: French

Wikipedia Abstract

The great grey owl or great gray owl (Strix nebulosa) is a very large owl, documented as the world's largest species of owl by length. It is distributed across the Northern Hemisphere, and it is the only species in the Strix (genus) found in both Eastern and Western Hemispheres. In some areas it is also called Phantom of the North, cinereous owl, spectral owl, Lapland owl, spruce owl, bearded owl, and sooty owl.
View Wikipedia Record: Strix nebulosa

Infraspecies

Strix nebulosa lapponica (Great grey owl)
Strix nebulosa nebulosa (Great grey owl)

EDGE Analysis

Uniqueness Scale: Similiar (0) 
4
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
23
 Unique & Vulnerable (100)
ED Score: 8.43899
EDGE Score: 2.24485
Learn more at EDGE of Existence programme

Attributes

Adult Weight [1]  1.964 lbs (891 g)
Birth Weight [3]  38 grams
Female Weight [6]  2.793 lbs (1.267 kg)
Male Weight [6]  1.962 lbs (890 g)
Weight Dimorphism [6]  42.4 %
Breeding Habitat [2]  Boreal forests
Wintering Geography [2]  Northern U.S./Canada
Wintering Habitat [2]  Boreal forests
Diet [4]  Carnivore (Invertebrates), Carnivore (Vertebrates)
Diet - Ectothermic [4]  20 %
Diet - Endothermic [4]  70 %
Diet - Invertibrates [4]  10 %
Forages - Ground [4]  100 %
Clutch Size [7]  4
Clutches / Year [3]  1
Fledging [5]  64 days
Global Population (2017 est.) [2]  190,000
Incubation [3]  30 days
Maximum Longevity [3]  16 years
Nocturnal [4]  Yes
Raptor Research Conservation Priority [8]  114
Snout to Vent Length [5]  29 inches (73 cm)
Wing Span [9]  4.494 feet (1.37 m)
Female Maturity [3]  1 year
Male Maturity [3]  1 year

Ecoregions

Protected Areas

Ecosystems

Important Bird Areas

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No
Mountains of Central Asia Afghanistan, China, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan No

Emblem of

Manitoba

Prey / Diet

Prey / Diet Overlap

Consumers

Parasitized by 
Pulex irritans (human flea)[16]

Range Map

External References

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1Storchová, Lenka; Hořák, David (2018), Data from: Life-history characteristics of European birds, Dryad, Dataset, https://doi.org/10.5061/dryad.n6k3n
♦ 2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
♦ 3de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 4Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
♦ 5Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 6Bull, EL, and JR Duncan. 1993. Great Gray Owl, Strix nebulosa. In A. Poole and F. Gill, editors. The Birds of North America. Number 41. Academy of Natural Sciences, Philadelphia, Pennsylvania, USA, and American Ornithologists' Union, Washington, DC, USA.
♦ 7Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
♦ 8Buechley ER, Santangeli A, Girardello M, et al. Global raptor research and conservation priorities: Tropical raptors fall prey to knowledge gaps. Divers Distrib. 2019;25:856–869. https://doi.org/10.1111/ddi.12901
♦ 9Alaska Wildlife Notebook Series, Alaska Department of Fish and Game
♦ 10Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 11Making The Forest And Tundra Wildlife Connection
♦ 12Martes zibellina (Carnivora: Mustelidae), VLADIMIR G. MONAKHOV, MAMMALIAN SPECIES 43(876):75–86 (2011)
♦ 13Exploring the Denali Food Web, ParkWise, National Park Service
♦ 14Sorex vagrans, Scott W. Gillihan and Kerry R. Foresman, MAMMALIAN SPECIES No. 744, pp. 1–5 (2004)
♦ 15Thomomys talpoides, B. J. Verts and Leslie N. Carraway, MAMMALIAN SPECIES No. 618, pp. 1-11 (1999)
♦ 16International Flea Database
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0