Strigiformes

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Great Horned Owl (Bubo virginianus)

Citation:

Non-territorial 'floaters' in great horned owls: space use during a cyclic peak of snowshoe hares

Author(s)
Rohner, Christoph
Pages
901-912
Year
Volume
53
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries Error
Home Range 24.8-26.1 mean home range size of nonterritorial individuals in 1990 and 1991 square km Both Male and Female Adult 6 (1990), 8 (1991) Kluane Lake (60 deg57'N, 138deg12'W), Yukon Exposure Factor Datasets CANADA
Territory Size 4.83 mean territory size of territorial pairs square km Both Male and Female Adult 16 territories Kluane Lake (60 deg57'N, 138deg12'W), Yukon Exposure Factor Datasets CANADA 0.40 SE
Citation:

Metabolic rates of red-tailed hawks and great horned owls

Author(s)
Pakpahan, Ani M., Jonathon B. Haufler and Harold H. Prince
Pages
1000-1002
Year
Volume
91
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Error Lab
Metabolic Rate 0.566 mean standard metabolic rate ml o^2/g bw/hr Male Adult 4 birds Exposure Factor Datasets fasted 0.080 Laboratory
Body Weight - Mean 1,588 mean body weight g Female Adult 2 birds Exposure Factor Datasets fasted 147 Laboratory
Body Weight - Mean 1,229 mean body weight g Male Adult 4 birds Exposure Factor Datasets fasted 106 Laboratory
Citation:

Food consumption and pellet formation rates in four owl species

Author(s)
Marti, Carl D.
Pages
178-181
Year
Issue
2
Volume
85
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Lab
Food Ingestion Rate 62.6 average daily consumption on an all mouse diet g/d Not Reported Adult 1 owl collected in Larimer County, CO Exposure Factor Datasets Laboratory
Citation:

Impacts of a nuclear energy facility on raptorial birds

Author(s)
Fitzner, R.E.
Pages
9-33
Publisher
U.S. Fish and Wildlife Service
Year
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of numbers of individual owls counted annually on a 1476 sq km study site individuals/study site Both Male and Female Adult 4 years Hanford Site, Benton and Franklin Counties Exposure Factor Datasets
Citation:

Hawks, Owls and Wildlife

Author(s)
Craighead, John J. and Frank C. Craighead, Jr.
Pages
443
Publisher
Dover Publications, Inc.
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Lab
Dietary Composition white-footed mice (3.6%), meadow mice (64.5%), shrews (0.3%), weasels (0.6%), red squirrel (0.3%), pocket gopher (23.5%), snowshoe rabbit (2.8%), ruffed grouse (1.4%) sage grouse (0.3%), mallard (0.6%), sm-med sized birds (1.4%), sucker (0.8%) percent occurrence of prey items in diet during nesting % Not Reported Not Reported 361 food items, 4 nests Jackson Hole Exposure Factor Datasets
Food Ingestion Rate averages of food amounts eaten per day g Both Male and Female Not Reported 2 birds Exposure Factor Datasets captive Laboratory
Citation:

Great horned owl food habits at Mono Lake, California

Author(s)
Aigner, Paul A., Michael L. Morrison, Linnea S. Hall, and William M. Block
Pages
286-288
Year
Issue
3
Volume
39
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition Sylvilagus spp. (1.0%), unident. lagomorphs (0.2%), Peromyscus maniculatus (42.%), Microtus monatus (23.7%), unident. rodents (2.9%), Myotis spp. (1.9%), unident. mammal (1.5%), Podiceps nigricollis (1.0%), unident. rail (0.2%), Larus californicus (1.7%), unident. owl (0.4%), unident. blackbird (0.4%), unident. large bird (4.6%), unident. medium bird (1.2%), unident. small bird (6.9%), unident. vertebrate (1.0%), insects (8.3%), scorpions (0.4%) percent occurence of prey items in pellets Not Reported Not Reported 219 pellets, 518 remains Paoha Island, Mono Lake Exposure Factor Datasets Mono
Dietary Composition Lepus californicus (0.2%), Sylvilagus spp. (6.0%), unident. lagomorphs (1.7%), Peromyscus maniculatus (69.2%), Microtus monatus (0.7%), Dipodomys spp. (0.6%), unident. rodents (0.4%), Myotis spp. (1.1%), unident. chiropteran (0.2%), unident. mammal (3.9%), Larus californicus (1.3%), unident. large bird (7.1%), unident. medium bird (1.1%), unident. small bird (0.9%), unident. vertebrate (4.3%), insects (1.5%) percent occurence of prey items in pellets Not Reported Not Reported 188 pellets, 536 remains Negit Island, Mono Lake Exposure Factor Datasets Mono
Citation:

The nesting, reproductive performance, and chlorinated hydrocarbon residues in the red-tailed hawk and great horned owl in south-central Montana

Author(s)
Seidensticker, John C. and Harry V. Reynolds
Pages
408-418
Year
Issue
4
Volume
83
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Time of Nesting mid-Feb to Jun 20 period from first territory selection to last brood fledged Both Male and Female Adult 15 nests south-central Montana Exposure Factor Datasets
Fledging or Weaning Rate 64% percent of nests known to fledge young Not Reported Fledgling 11 nests south-central Montana Exposure Factor Datasets
Hatching Success 100% percent of eggs hatched in nests that produced young Not Reported Nestling 11 nests south-central Montana Exposure Factor Datasets
Clutch or Litter Size 2.2 eggs/clutch Female Adult 6 nests south-central Montana Exposure Factor Datasets 0.2 SE
Citation:

Food habits of the great horned owl (Bubo virginianus) in a Patagonian steppe in Argentina

Author(s)
Trejo, Ana, and Dora Grigera
Pages
306-311
Year
Issue
4
Volume
32
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Countries
Dietary Composition rodents (98.5%), birds + insects + reptiles + lagomorphs (1.5%) percent of prey types in diet (seasonal average) Not Reported Adult 522 pellets near Bariloche, northwest. Patagonia Exposure Factor Datasets ARGENTINA
Citation:

Food habits of the horned and barn owls

Author(s)
Cunningham, John D.
Pages
222
Year
Volume
62
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition Neotoma fuscipes (7.9%), Thomomys bottae (20.7%), Mus musculus (25.0%), Microtus californicus (14.9%), Reithrodontomys megalotis (1.7%), Perognathus sp. (4.1%), Dipodomys agilis (4.3%), Peromyscus sp. (3.8%), Notiosorex crawfordi (0.3%), Sylvilagus sp. (0.8%), Sorex ornatus (0.1%), Scapanus latimanus (0.7%), Stenopelmatus sp (2.1%), Elgaria multicarinata (0.1%), unident. birds (4.3%) percent of total number of specimens identified in pellets Not Reported Not Reported 25 lbs of pellets Univ. of Calif., Los Angeles campus Exposure Factor Datasets Los Angeles
Dietary Composition Neotoma fuscipes (11.3), Thomomys bottae (36.2), Mus musculus (14.0), Microtus californicus (13.5), Reithrodontomys megalotis (8.7), Perognathus sp. (7.8), Dipodomys agilis (3.1), Peromyscus sp. (3.1), Notiosorex crawfordi (1.3), Sylvilagus sp. (0.5), Sorex ornatus (0.5) percent of total number of specimens identified in pellets Not Reported Not Reported Not Reported Santa Monica Mountains (1 ledge) Exposure Factor Datasets
Citation:

A banding study of Cincinnati area great horned owls

Author(s)
Holt, John B., Jr.
Pages
194-197
Year
Issue
4
Volume
30
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size 1-4 brood size at the time of banding young/nest Not Reported Juvenile 906 nests near Cincinnati Exposure Factor Datasets
Hatching Success 47.3% percent of nests with at least one young surviving to banding age (of all pairs observed) Not Reported Juvenile 1777 territories near Cincinnati Exposure Factor Datasets
Citation:

Metabolic rate and evaporative water loss of Mexican spotted and great horned owls

Author(s)
Ganey, Joseph L., Russell P. Balda, and Rudy M. King
Pages
645-656
Year
Issue
4
Volume
105
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Lab
Metabolic Rate 0.59 average basal metabolic rate cc O^2/g bw/hr Not Reported Adult 3 birds Exposure Factor Datasets postabsorptive Laboratory
Citation:

Predation ecology of coexisting great horned and barn owls

Author(s)
Rudolph, Seri G.
Pages
134-137
Year
Issue
1
Volume
90
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type California Counties
Dietary Composition Microtus (66.7%), Peromyscus (27.6%), Dipodomys (1.1%), Sylvilagus (0.3%), Euphagus cyanocephalus (0.3%), Sorex (0.2%), Tadarida brasiliensis (0.2%), Mustela frenata (0.2%), unident. bird (1.4%), unident. small mammal (0.7%), insect (1.3%) percent occurence of prey items in pellets Not Reported Not Reported 107 pellets Tule Lake National Wildlife Refuge Exposure Factor Datasets Siskiyou
Citation:

North America's oldest great horned owl

Author(s)
Houston, C. Stuart
Pages
88-90
Year
Issue
2
Volume
50
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Longevity 20.7 known age at time of death yr Not Reported Adult 1 bird s. of Aberdeen, Saskatchewan Exposure Factor Datasets CANADA
Citation:

Food-niche relationships between great horned owls and common barn owls in eastern Washington

Author(s)
Knight, Richard L. and Ronald E. Jackman
Pages
175-179
Year
Volume
101
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Sylvilagus nuttallii (12.4%), Spermophilus washingtoni (0.4%), Thomomys talpoides (29.7%), Perognathus parvus (12.5%), Dipodomys ordii (1.4%), Reithrodontomys megalotis (0.3%), Peromyscus maniculatus (6.2%), Neotoma cinerea (2.1%), Microtus montanus (7.7%), Mus musculus (0.2%), unident. microtinae (4.5%), Mustela frenata (0.4%), Anas platyrynchos (2.6%), Phasianus colchicus (2.5%), Fulica americana (1.5%), Charadrius vociferus (0.2%), Tyto alba (10.7%), Sternella neglecta (0.2%), unident. Fringillidae (0.2%), unident. Passeriformes (1.2%), unident. snake (1.4%), Cyprinus carpio (1.3%), Stenopelmatus spp (0.2%) percent of total prey biomass Not Reported Not Reported 234 pellets Esquatzel Coulee, Franklin County Exposure Factor Datasets
Citation:

Growth development and reactions of young great horned owls

Author(s)
Reed, Bessie P.
Pages
14-31
Year
Volume
42
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Lab
Body Weight - Mean maximum body weights achieved by captively raised chicks oz Not Reported Juvenile 2 birds captured in Kansas Exposure Factor Datasets Laboratory
Citation:

New great horned owl longevity record

Author(s)
Nero, Robert W.
Pages
91-92
Year
Issue
2
Volume
50
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Longevity 28+ age at time of death yr Female Adult 1 bird Asiniboine Park Zoo, Winnipeg Exposure Factor Datasets CANADA
Citation:

Diet and trophic characteristics of great horned owls in southwestern Idaho

Author(s)
Marti, Carl D. and Michael N. Kochert
Pages
499-506
Year
Issue
4
Volume
67
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition unident. snake (0.3%), Sylvilagus nuttallii (19.2%), Lepus californicus (14.3%), unident. leporid (16.1%), Spermophilus townsendii (0.6%), Thomomys townsendii (14.6%), Perognathus parvus (0.4%), Dipodomys ordii (11.1%), Reithrodontomys megalotis (0.2%), Peromyscus spp (2.3%), Neotoma cinerea (4.6%), Neotoma lepida (2.0%), unident. woodrat (0.3%), Microtus montanus (4.7%), Mus musculus (0.7%), Mustela frenata (0.1%), Falco sparverius (0.1%), Phasianus colchicus (1.9%), Callipepla californicus (0.1%), unident. galliform (0.4%), Fulica americana (0.4%), Columba livia (0.9%), Tyto alba (0.3%), Sturnus vulgaris (0.2%), unident. passerine (0.6%), unident. bid (3.4%) occurence in diet as percent of total prey biomass, based on pellet analysis Not Reported Not Reported 14 nesting areas, 1472 prey items Snake River Birds of Prey National Conservation Area (42 deg, 50'N, 115 deg, 50'W) Exposure Factor Datasets
Citation:

Monitoring great horned owls for pesticide exposure in southcentral Iowa

Author(s)
Buck, Jeremy A., Larry W. Brewer, Michael J. Hooper, George P. Cobb and Ronald J. Kendall
Pages
321-331
Year
Issue
2
Volume
60
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Home Range home range size (minimum convex polygon model) as determined by radiotelemetry ha Not Reported Not Reported 22 owls Exposure Factor Datasets
Citation:

Movements, population fluctuations, and mortality among great horned owls

Author(s)
Stewart, Paul A.
Pages
155-162
Year
Issue
2
Volume
81
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Countries
Survival/ Mortality 31% mean annual mortality after the first year of banding based on band return data, 1951-1962 Not Reported Both Adults and Juveniles 97 birds Exposure Factor Datasets CANADA, USA

Burrowing Owl (Athene cunicularia formerly Speotyto cunicularia)

Citation:

Comparative diets of burrowing owls in Oregon and Washington

Author(s)
Green, Gregory A., Richard E. Fitzner, Robert G. Anthony and Lee E. Rogers
Pages
88-93
Year
Issue
2
Volume
67
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition vertebrate (89.9%), invertebrate (10.1%) diet composition by percent biomass in pellets Both Male and Female Adult 769 pellets Columbia Basin Exposure Factor Datasets
Citation:

Sexual size dimorphism, mate choice, and productivity of burrowing owls

Author(s)
Plumpton, David L and R. Scott Lutz
Pages
724-727
Year
Issue
3
Volume
111
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Body Weight - Mean 156 g Female Adult 31 birds Rocky Mountain Arsenal National Wildlife Area Exposure Factor Datasets 3.6 (SE)
Clutch or Litter Size 4.38 mean productivity chicks/nesting territory Both Male and Female Adult 33 nests Rocky Mountain Arsenal National Wildlife Area Exposure Factor Datasets
Citation:

Behavior and ecology of burrowing owls on the Oakland Municipal Airport

Author(s)
Thomsen, Lise
Pages
177-192
Year
Volume
73
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Time of Nesting April - June Both Male and Female Adult 18 birds Oakland Airport Exposure Factor Datasets
Time of Fledging or Metamorphosis September period by which fledging is complete Both Male and Female Adult 18 birds Oakland Airport Exposure Factor Datasets
Dietary Composition mammals (18.9%), birds (3.9%), insects (29.9%), vegetation (71.3%) mean percent occurrence in pellets Both Male and Female Not Reported 209 pellets Oakland Airport Exposure Factor Datasets
Dietary Composition mammals (31.4%), birds (5.9%), insects (28.6%), vegetation (61.0%) mean percent occurrence in pellets Both Male and Female Not Reported 608 pellets Oakland Airport Exposure Factor Datasets
Dietary Composition mammals (41.2%), birds (2.0%), insects (23.3%), vegetation (55.5%) mean percent occurrence in pellets Both Male and Female Not Reported 366 pellets Oakland Airport Exposure Factor Datasets
Dietary Composition mammals (35.7%), birds (1.3%), insects (27.7%), vegetation (57.4%) mean percent occurrence in pellets Both Male and Female Not Reported 929 pellets Oakland Airport Exposure Factor Datasets
Citation:

Burrowing Owl (Speotyto cunicularia)

Author(s)
Haug, Elizabeth A., Brian A. Millsap and Mark S. Martell
Pages
1-20
Publisher
The Academy of Natural Sciences; Philadelphia, PA: The American Ornithologists' Union, Washington, D.C.
Year
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type Countries
Hatching Success review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Age at Fledging, Metamorphosis, Weaning review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Age at Sexual Maturity review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Survival/ Mortality review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Home Range review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Body Weight - Mean review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Citation:

The effect of burrow site use on the reproductive success of a partially migratory population of western burrowing owls (Speotyto cunicularia hypugaea)

Author(s)
Botelho, Eugene S., and Patricia C. Arrowood
Pages
233-240
Year
Issue
3
Volume
32
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Clutch or Litter Size 8.8 mean clutch size in artificial burrows eggs/clutch Female Adult 8 clutches, 66 eggs New Mexico State University Exposure Factor Datasets 1.8 SE
Fledging or Weaning Rate 1.5 mean fledging rate in artificial burrows fledglings/nest Not Reported Juvenile 8 clutches, 66 eggs New Mexico State University Exposure Factor Datasets 1.5 SE
Hatching Success 2.2 mean hatching success in natural burrows eggs hatched/eggs laid Not Reported Juvenile 59 nests New Mexico State University Exposure Factor Datasets 1.9 SE
Fledging or Weaning Rate 1.9 mean fledging rate in natural burrows fledglings/nest Not Reported Juvenile 59 nests New Mexico State University Exposure Factor Datasets 1.9 SE
Citation:

Artificial burrows provide new insight into burrowing owl nesting biology

Author(s)
Henny, Charles J. and Lawrence J. Blus
Pages
82-85
Year
Issue
3
Volume
15
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size eggs/clutch Female Adult 4 burrows Umatillo and Morrow counties Exposure Factor Datasets
Hatching Success based on number of young observed at burrow % Both Male and Female Hatchling 4 burrows Umatillo and Morrow counties Exposure Factor Datasets
Time of Mating/ Laying April Female Adult 4 burrows Umatillo and Morrow counties Exposure Factor Datasets
Citation:

Nest site characteristics and reproductive success of burrowing owls (Strigiformes: Strigidae) in Durango, Mexico

Author(s)
Rodriguez-Estrella, Ricardo and Alfredo Ortega-Rubio
Pages
143-148
Year
Issue
1
Volume
41
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density nesting density based on nearest-neighbor test pairs/km2 Both Male and Female Adult 23-29 pairs Mapimf Biosphere Reserve, Durango (1,000-1,350 m) Exposure Factor Datasets MEXICO
Fledging or Weaning Rate 1.91 fledglings/successful nest Both Male and Female Adult 52 nests Mapimf Biosphere Reserve, Durango (1,000-1,350 m) Exposure Factor Datasets MEXICO
Hatching Success 61 proportion of pairs that successfully raised at least one young % Both Male and Female Adult 52 nests Mapimf Biosphere Reserve, Durango (1,000-1,350 m) Exposure Factor Datasets MEXICO
Citation:

Trends in the winter distribution and abundance of burrowing owls in North America

Author(s)
James, Paul C. and Thomas J. Ethier
Pages
1224-1225
Year
Issue
4
Volume
43
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 7.8 based on Christmas bird counts 1954-1986 per 1,000 mi Both Male and Female Both Adults and Juveniles Not Reported Exposure Factor Datasets 2.3 (SD)
Citation:

Breeding-season food habits of burrowing owls (Athene cunicularia) in southwestern Dominican Republic

Author(s)
Wiley, James W.
Pages
241-245
Year
Issue
3
Volume
32
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Countries
Dietary Composition mammals (4.7%), birds (50.4%), amphibians (1.3%), reptiles (12.8%), insects (30.8%) percent composition of diet by biomass % Not Reported Adult 396 identified prey items Sierra de Bahoruco Exposure Factor Datasets nesting DOMINICAN REPUBLIC
Citation:

Nesting raptors along the Columbia River in north-central Washington

Author(s)
Knight, Richard L., Dwight G. Smith and Albert Erickson
Pages
2-8
Year
Volume
63
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 2 pairs/6669 ha Both Male and Female Adult Not Reported Columbia River Exposure Factor Datasets
Citation:

Reproductive ecology of the burrowing owl, Athene cunicularia floridana, in Dade and Broward counties, Florida

Author(s)
Mealey, B.K.
Year
Issue
1
Volume
27
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Hatching Success reproductive success rate among pairs % Both Male and Female Adult Not Reported Dade and Broward counties Exposure Factor Datasets
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