Animalia > Chordata > Aves > Strigiformes > Strigidae > Strix > Strix occidentalis
 

Strix occidentalis (Spotted Owl)

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Wikipedia Abstract

The Spotted Owl (Strix occidentalis) is a species of true owl. It is a resident species of old-growth forests in western North America, where it nests in tree holes, old bird of prey nests, or rock crevices. Nests can be between 12 to 60 metres (to ft) high and usually contain two eggs (though some will contain as many as four). It is a nocturnal owl, which feeds on small mammals and birds, which has only been discovered recently.
View Wikipedia Record: Strix occidentalis

Infraspecies

Strix occidentalis caurina (Northern Spotted Owl) (Attributes)
Strix occidentalis juanaphillipsae (Spotted owl)
Strix occidentalis lucida (Mountain spotted owl) (Attributes)
Strix occidentalis occidentalis (California spotted owl) (Attributes)

EDGE Analysis

Uniqueness Scale: Similiar (0) 
10
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
41
 Unique & Vulnerable (100)
ED Score: 8.58579
EDGE Score: 2.95343

Attributes

Adult Weight [1]  1.30 lbs (589 g)
Female Maturity [1]  1 year
Male Maturity [1]  1 year
Clutch Size [2]  2
Incubation [1]  30 days
Maximum Longevity [1]  25 years

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Arizona Mountains forests United States Nearctic Temperate Coniferous Forests
British Columbia mainland coastal forests Canada, United States Nearctic Temperate Coniferous Forests
California Central Valley grasslands United States Nearctic Temperate Grasslands, Savannas, and Shrublands
California coastal sage and chaparral Mexico, United States Nearctic Mediterranean Forests, Woodlands, and Scrub
California interior chaparral and woodlands United States Nearctic Mediterranean Forests, Woodlands, and Scrub
California montane chaparral and woodlands United States Nearctic Mediterranean Forests, Woodlands, and Scrub
Central Pacific coastal forests Canada, United States Nearctic Temperate Coniferous Forests  
Chihuahuan desert Mexico, United States Nearctic Deserts and Xeric Shrublands
Colorado Plateau shrublands United States Nearctic Deserts and Xeric Shrublands
Colorado Rockies forests United States Nearctic Temperate Coniferous Forests
Klamath-Siskiyou forests United States Nearctic Temperate Coniferous Forests
Northern California coastal forests United States Nearctic Temperate Coniferous Forests
Puget lowland forests United States Nearctic Temperate Coniferous Forests
Sierra Juarez and San Pedro Martir pine-oak forests Mexico Nearctic Temperate Coniferous Forests
Sierra Madre de Oaxaca pine-oak forests Mexico Neotropic Tropical and Subtropical Coniferous Forests
Sierra Madre Occidental pine-oak forests Mexico, United States Nearctic Tropical and Subtropical Coniferous Forests
Sierra Madre Oriental pine-oak forests Mexico, United States Nearctic Tropical and Subtropical Coniferous Forests
Wasatch and Uinta montane forests United States Nearctic Temperate Coniferous Forests

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Bandelier National Monument V 8107 New Mexico, United States
California Coast Ranges Biosphere Reserve 153447 California, United States  
Canyonlands National Park II 335430 Utah, United States
Capital Reef National Park II 243722 Utah, United States
Carlsbad Caverns National Park II 15448 New Mexico, United States
Chiricahua National Monument V 1421 Arizona, United States
Crater Lake National Park II 180091 Oregon, United States
Devil's Postpile National Monument V 807 California, United States
Fort Bowie National Historic Site III 1004 Arizona, United States
Glen Canyon National Recreation Area V 1087901 Arizona, Utah, United States
Grand Canyon National Park II 1210128 Arizona, United States
Guadalupe Mountains National Park II 46114 Texas, United States
H.J. Andrews Biosphere Reserve 15815 Oregon, United States
Heath and Marjorie Angelo Coast Range Preserve Nature Conservancy - Preserve Ia 7008 California, United States
Lake Chelan National Recreation Area II 606367 Washington, United States
Landels-Hill Big Creek Preserve Nature Conservancy - Preserve Ia 45 California, United States
Lassen Volcanic National Park II 29388 California, United States
Latour Demonstration State Forest   California, United States
Mesa Verde National Park II 40098 Colorado, United States
Mojave and Colorado Deserts Biosphere Reserve 5901 California, United States  
Mount Rainier National Park II 235186 Washington, United States
Mount Tamalpais State Park 6365 California, United States
Muir Woods National Monument V 492 California, United States
Navajo National Monument V 604 Arizona, United States
Olympic Biosphere Reserve II 922805 Washington, United States
Oregon Caves National Monument V 456 Oregon, United States
Philip L. Boyd Deep Canyon Desert Research Center 6101 California, United States
Point Reyes National Seashore II 27068 California, United States
Redwood National Park II 77867 California, United States
Reserva de la Michilia Biosphere Reserve VI 23405 Durango, Mexico  
Samuel P. Taylor State Park 2694 California, United States
San Dimas Biosphere Reserve 17161 California, United States  
Sequoia and Kings Canyon Biosphere Reserve II 172261 California, United States
Sevilleta LTER Site Long Term Ecological Research IV 228335 New Mexico, United States
Tomales Bay State Park 1659 California, United States
Tonto National Monument V 1123 Arizona, United States
Walnut Canyon National Monument V 3386 Arizona, United States
Whiskey-Shasta-Trinity National Recreation Area V 197791 California, United States
Yosemite National Park II 95209 California, United States
Zion National Park II 135667 Utah, United States

Important Bird Areas

BirdLife Species Factsheet: View Factsheet
Name Location  IBA Criteria   Website   Climate   Land Use 
Zion National Park USA A1

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No
Madrean Pine-Oak Woodlands Mexico, United States No

Prey / Diet

Clethrionomys californicus (western red-backed vole)[3]
Glaucomys sabrinus (northern flying squirrel)[4]
Neotoma fuscipes (dusky-footed woodrat)[5]
Thomomys mazama (western pocket gopher)[6]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Accipiter gentilis (Northern Goshawk)1
Aegolius acadicus (Northern Saw-whet Owl)1
Bubo virginianus (Great Horned Owl)2
Buteo jamaicensis (Red-tailed Hawk)2
Canis latrans (Coyote)3
Canis lupus (Wolf)1
Crotalus cerberus (viridis)1
Lynx rufus (Bobcat)2
Martes americana (American Marten)2
Mustela erminea (Ermine)1
Mustela frenata (Long-tailed Weasel)2
Pituophis catenifer (Gopher Snake)1
Strix nebulosa (Great Grey Owl)1
Strix varia (Barred Owl)1
Tyto alba (Barn Owl)1

Consumers

Parasitized by 
Capillaria falconis <Unverified Name>[7]
Centrorhynchus conspectus[7]
Centrorhynchus robustus <Unverified Name>[7]
Paruterina rauschi <Unverified Name>[7]
Porrocaecum depressum <Unverified Name>[7]
Synhimantus hamatus <Unverified Name>[7]

Institutions (Zoos, etc.)

    Maps
Institution Infraspecies / Breed 
Guadalajara Zoo
Mountain View Conservation & Breedingcaurina
Northwest Trek Wildlife Park
Sequoia Park Zoo
Woodland Park Zoological Gardens
 caurina

Range Map

North America;

Photos

Citations

Species recognized by Peterson A.P., 2005-09-28, in Catalog of Life 2011
Attributes / relations provided by 1de 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 2Jetz 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 3Clethrionomys californicus, Lois F. Alexander and B. J. Verts, MAMMALIAN SPECIES No. 406, pp. 1-6 (1992) 4Glaucomys sabrinus, Nancy Wells-Gosling and Lawrence R. Heaney, Mammalian Species No. 229, pp. 1-8 (1984) 5Neotoma fuscipes, L. N. Carraway and B. J. Verts, MAMMALIAN SPECIES No. 386, pp. 1-10 (1991) 6Thomomys mazama, B. J. Verts and Leslie N. Carraway, MAMMALIAN SPECIES No. 641, pp. 1–7 (2000) 7Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 gis.wwfus.org/wildfinder
Biodiversity Hotspots provided by Biodiversity Hotspots, Conservation International
Important Bird Areas provided by BirdLife International (2010) Important Bird Areas. Downloaded from http://www.birdlife.org on 29/12/2010
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
EDGE analysis provided by EDGE of Existence programme, Zoological Society of London
Range map provided by Ridgely, R. S., T. F. Allnutt, T. Brooks, D. K. McNicol, D. W. Mehlman, B. E. Young, and J. R. Zook. 2007. Digital Distribution Maps of the Birds of the Western Hemisphere, version 3.0. NatureServe, Arlington, Virginia, USA.
Data provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE.
Weather provided by NOAA METAR Data Access
Institution information provided by International Species Information System - May 2011