Strigiformes

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Great Horned Owl (Bubo virginianus)

Citation:

Productivity and survival of great horned owls exposed to dieldrin

Author(s)
Frank, Rosemary A. and R. Scott Lutz
Pages
331-339
Year
Volume
101
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
DIELDRIN no effect productivity in contaminated versus uncontaminated sites Both Male and Female Adult 3-4 nests on contaminated sites; 5-9 nests on uncontaminated sites Rocky Mountain Arsenal National Wildlife Refuge Toxicity Factor Datasets
DIELDRIN negative correlation relationship between residue in plasma and survival Not Reported Juvenile 6 birds (contaminated sites), 10 birds (uncontaminated sites) Rocky Mountain Arsenal National Wildlife Refuge Toxicity Factor Datasets
DIELDRIN no effect daily and interval survival estimates on uncontaminated versus contaminated sites Not Reported Juvenile 14 birds on contaminated sites; 41 birds on uncontaminated sites Rocky Mountain Arsenal National Wildlife Refuge Toxicity Factor Datasets
DIELDRIN no effect daily survival rates on uncontaminated versus contaminated sites Not Reported Adult 9 birds on contaminated sites; 11 birds on uncontaminated sites Rocky Mountain Arsenal National Wildlife Refuge Toxicity Factor Datasets
DIELDRIN 0.07 +/- 0.03 ppm (uncontaminated site); 0.34 +/- 0.21 ppm (contaminated site) mean (+/- SE) concentrations in plasma Not Reported Adult 2 birds on contaminated sites; 5 birds on uncontaminated sites Rocky Mountain Arsenal National Wildlife Refuge Toxicity Factor Datasets
DIELDRIN 0.01 +/- 0.003 ppm (uncontaminated site); 0.22 +/- 0.03 ppm (contaminated site) mean (+/- SE) concentrations in plasma Not Reported Juvenile 6 birds on contaminated sites; 10 birds on uncontaminated sites Rocky Mountain Arsenal National Wildlife Refuge Toxicity Factor Datasets
Citation:

Effects of pesticides on owls in North America

Author(s)
Blus, Lawrence J.
Pages
198-206
Year
Issue
4
Volume
30
Chemical Endpoint Value Endpoint Description Sex Life Cycle Stage Location Type Countries
STRYCHNINE, ZINC PHOSPHIDE review summaries of sublethal effects due to organochlorine, anticholinesterase, anticoagulant, strychnine pesticides Not Reported Not Reported Toxicity Factor Datasets CANADA, USA
Citation:

Factors influencing respiratory rates in four species of raptors

Author(s)
Daniels, Kathleen and G.E. Duke
Pages
703-706
Year
Volume
66
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition Error Lab
Inhalation Rate 19.1 mean resting respiratory rate #/min Not Reported Adult 4 Exposure Factor Datasets crippled, non-releasable 3.28 SD Laboratory
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 0.343 mean standard metabolic rate ml O^2/g bw/hr Female Adult 2 birds Exposure Factor Datasets fasted 0.044 Laboratory
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:

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:

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:

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:

Food consumption and energy, water, and nitrogen budgets in captive great-horned owls (Bubo virginianus)

Author(s)
Duke, G.E., J.G. Ciganek and O.A. Evanson
Pages
283-292
Year
Volume
44
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error Lab
Food Ingestion Rate 26.58 daily food intake on a mouse diet, dry weight basis g/kg/d Not Reported Adult 4 owls x 5 days = 20 owl days Exposure Factor Datasets 4.08 Laboratory
Food Ingestion Rate 26.37 daily food intake on a turkey poult diet, dry weight basis g/kg/d Not Reported Adult 26 owl days Exposure Factor Datasets 6.33 SD Laboratory
Body Weight - Mean 1615 mean of averaged body weights (10-13 weighings/bird) g Not Reported Adult 4 birds Exposure Factor Datasets Laboratory
Citation:

Arthropod diet of a western horned owl

Author(s)
Ohlendorf, Harry M.
Pages
124-125
Year
Issue
1
Volume
16
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition wolf spider (1), centipede (2), tarantula (3), grasshopper (1), walking stick (2) numbers of prey items in stomach contents Not Reported Adult 1 owl 13 mi NE Fort Davis, Jeff Davis County Exposure Factor Datasets
Citation:

Diet, cast composition, and energy and nutrient intake of red-tailed hawks (Buteo jamaicensis), great horned owls (Bubo virginianus), and turkey vultures (Cathartes aura)

Author(s)
Tabaka, Christopher S., Duane E. Ullrey, James G. Sikarskie, Sharon R. DeBar and Pao K. Ku
Pages
187-196
Year
Issue
2
Volume
27
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error Lab
Food Ingestion Rate 115 weight consumed per day on an all chick diet g/d Not Reported Adult 4 owls Exposure Factor Datasets 16.9 SD Laboratory
Food Ingestion Rate 114 weight consumed per day on an all hamster diet g/d Not Reported Adult 4 owls Exposure Factor Datasets 21.4 SD Laboratory
Citation:

Reversed sexual size dimorphism: its effect on prey selection by the great horned owl, Bubo virginianus

Author(s)
Longland, William S.
Pages
395-398
Year
Issue
3
Volume
54
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition Dipodomys ordii (0.13%), Microtus montanus (0.14%), Perognathus parvus (0.02%), Peromyscus maniculatus (0.50%), Thomomys umbrinus (0.21%) relative proportion of prey species in the diet, based on pellet analysis Female Adult 1 owl Gund Research Ranch, University of Nevada Exposure Factor Datasets
Dietary Composition Dipodomys ordii (0.11%), Microtus montanus (0.12%), Perognathus parvus (0.03%), Peromyscus maniculatus (0.63%), Thomomys umbrinus (0.10%) relative proportion of prey species in the diet, based on pellet analysis Male Adult 1 owl Gund Research Ranch, University of Nevada Exposure Factor Datasets
Citation:

Food habits of the great horned owl (Bubo virginianus) in the cape region of Lower California, Mexico

Author(s)
Llinas-Gutierrez, Jorge, Gustavo Arnaud and Marcos Acevedo
Pages
140-141
Year
Issue
4
Volume
25
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Condition Countries
Dietary Composition mammals (47.0%), birds (5.2%), reptiles (15.7%), arachnids (8.7%), centipedes (7.0%), insects (16.5%) percent of total numbers of prey items in diet, based on pellet analysis Both Male and Female Adult 2 owls (49 pellets) El Comitan, Baja California Sur Exposure Factor Datasets nesting MEXICO
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:

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:

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:

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:

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:

The growth of some young raptorial birds

Author(s)
Sumner, E. Lowell, Jr.
Pages
277-308
Year
Issue
4
Volume
40
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type Lab
Growth Rate see figures figures showing weight increase and feather growth for 0-73 days of age Not Reported Nestling five owls collected in California Exposure Factor Datasets Laboratory
Citation:

Growth analysis of a female great horned owl in central Ohio

Author(s)
Springer, Mark A.
Pages
218-221
Year
Issue
6
Volume
50
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Growth Rate 0.1900 growth constant based on logistic growth equation Female Nestling 1 owl Delaware County Exposure Factor Datasets
Citation:

Notes on nesting great horned owls in southern Arizona

Author(s)
Mader, William J.
Pages
109-111
Year
Issue
3/4
Volume
7
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Condition
Time of Mating/ Laying February (peak), March (end) egg laying dates Female Adult 16 nests Pima and Pinal Counties Exposure Factor Datasets breeding
Clutch or Litter Size 2.5 mean clutch size eggs/clutch Female Adult 16 nests Pima and Pinal Counties Exposure Factor Datasets breeding
Fledging or Weaning Rate 1.1 rate of production of young at least 4 weeks old young/nest Not Reported Nestling 16 nests Pima and Pinal Counties Exposure Factor Datasets breeding
Fledging or Weaning Rate 9/16 fraction of nests that sucessfully raised at least one nestling to the age of 4 weeks successful nests/total nests Both Male and Female Adult 16 nests Pima and Pinal Counties Exposure Factor Datasets breeding
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 Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Clutch or Litter Size 3.0 average clutch size eggs/clutch Female Adult 12 nests Hanford Site, Benton and Franklin Counties Exposure Factor Datasets 0.56
Hatching Success 2.67 average number of young hatched hatches/nest Not Reported Nestling 12 nests Hanford Site, Benton and Franklin Counties Exposure Factor Datasets 1.09
Fledging or Weaning Rate 2.67 average number of young fledged fledglings/nest Not Reported Fledgling 12 nests Hanford Site, Benton and Franklin Counties Exposure Factor Datasets 1.09
Population Density range of numbers of nesting pairs counted annually on a 1476 sq km study site pairs/study site Both Male and Female Adult 4 years Hanford Site, Benton and Franklin Counties Exposure Factor Datasets
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:

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:

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:

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
Foraging Distance 0.25 typical maximum distance between two roosting sites mi Both Male and Female Adult 11 home ranges Superior and Ann Arbor townships Exposure Factor Datasets
Citation:

Prey of nesting red-tailed hawks and great horned owls on Lostwood National Wildlife Refuge, northwestern North Dakota

Author(s)
Murphy, Robert K.
Pages
145-149
Year
Issue
3
Volume
55
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition meadow vole and jumping mouse (11.3%), juv. white-tailed jackrabbit (9.4%), horned or eared grebe (5.7%), American coot (22.6%), sora and Virginia rails (3.8%), duck (26.4%), sharp-tailed grouse (9.4%), blackbird (11.3%) relative frequency of prey species occurence in nests Not Reported Nestling 78 nest visits Lostwood National Wildlife Refuge Exposure Factor Datasets

Burrowing Owl (Athene cunicularia formerly Speotyto cunicularia)

Citation:

Note on food habits of the screech owl and the burrowing owl of southeastern Oregon

Author(s)
Brown, Barbara A., John O. Whitaker, Thomas W. French and Chris Maser
Pages
421-426
Year
Issue
3
Volume
46
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition vertebrates (14.3%), invertebrates (85.7%) percent of diet based on pellet analysis Both Male and Female Adult 150 pellets Malheur county Exposure Factor Datasets
Citation:

Behavior and population ecology of the burrowing owl, Speotyto cunicularia, in the Imperial Valley of California

Author(s)
Coulombe, Harry N.
Pages
162-176
Year
Volume
73
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density breeding season density based on roadside censuses birds/mi^2 Both Male and Female Adult Not Reported Imperial Valley Exposure Factor Datasets
Citation:

Results of the 1991 census of burrowing owls in central California: an alarmingly small and declining population

Author(s)
Desante, D.F., E. Ruhlen, S. Amin, and K.M. Burton
Pages
59
Year
Issue
1
Volume
27
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 925 estimate of number of pairs in census area pairs/43,235 km^2 Both Male and Female Not Reported 198 UTM blocks censused San Francisco Bay and Central Valley areas Exposure Factor Datasets
Citation:

Nesting success and habitat relationships of burrowing owls in the Columbia River Basin, Oregon

Author(s)
Green, Gregory A and Robert G. Anthony
Pages
347-354
Year
Volume
91
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Fledging or Weaning Rate 50-57% percent of occupied nests that fledged young Both Male and Female Adult 63-76 nests Gilliam, Morrow, and Umatilla counties Exposure Factor Datasets
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 (86.7%), invertebrate (13.3%) diet composition by percent biomass in pellets Both Male and Female Adult pellets 5,559 Columbia Basin Exposure Factor Datasets
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:

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
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:

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:

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
Fledging or Weaning Rate 2.5 young/occupied nest Both Male and Female Adult Not Reported Columbia River Exposure Factor Datasets
Citation:

Food habits of the burrowing owl in central Oregon

Author(s)
Maser, Chris, E. Wayne Hammer and Stanley H. Anderson
Pages
19-26
Year
Issue
1
Volume
45
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Dietary Composition mammals (414), insects (259), birds (3), spiders (2) number of prey items found in sample pellets Both Male and Female Both Adults and Juveniles 228 pellets Crooked River National Grassland Exposure Factor Datasets
Dietary Composition mammals (50), insects (108), birds (1) number of prey items found in sample pellets Both Male and Female Both Adults and Juveniles 39 pellets Crooked River National Grassland Exposure Factor Datasets
Citation:

Selected aspects of burrowing owl ecology and behavior

Author(s)
Martin, Dennis J.
Pages
446-456
Year
Volume
75
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Clutch or Litter Size 78 total number of young observed on study site young/study site Both Male and Female Juvenile 15 pairs Albuquerque Exposure Factor Datasets
Fledging or Weaning Rate 4.9 fledglings/pair Both Male and Female Fledgling 15 pairs Albuquerque Exposure Factor Datasets
Time of Mating/ Laying third week of March (begin) Female Adult 15 pairs Albuquerque 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 146 g Male Adult 38 birds Rocky Mountain Arsenal National Wildlife Area Exposure Factor Datasets 1.9 (SE)
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 Units Sex Life Cycle Stage Sample Size Location Type
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
Clutch or Litter Size mean annual productivity young/breeding adult Both Male and Female Adult 18 birds Oakland Airport Exposure Factor Datasets
Survival/ Mortality 70 % Both Male and Female Juvenile 40 birds Oakland Airport Exposure Factor Datasets
Time of Migration or Dispersal Sep, Jan Both Male and Female Juvenile Not Reported Oakland Airport Exposure Factor Datasets
Time of Molt Jul (begin) Both Male and Female Adult Not Reported Oakland Airport Exposure Factor Datasets
Fledging or Weaning Rate proportion of nesting pairs that successfully fledged young (over two years) % Both Male and Female Adult 18 birds Oakland Airport Exposure Factor Datasets
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
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:

Comparison of selected aspects of burrowing owl ecology at two sites in Santa Clara county, California

Author(s)
Trulio, L.A.
Pages
63-64
Year
Issue
1
Volume
27
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Hatching Success 73 percent of pairs hatching at least one chick % Both Male and Female Adult 15 pairs Moffett Air Force Base Exposure Factor Datasets Santa Clara
Clutch or Litter Size 2.5 mean number of chicks per nest chicks/nest Both Male and Female Adult 11 pairs Moffett Air Force Base Exposure Factor Datasets Santa Clara
Hatching Success 78 percent of pairs hatching at least one chick % Both Male and Female Adult 9 pairs Shoreline Park Exposure Factor Datasets Santa Clara
Clutch or Litter Size 3.0 mean number of chicks per nest chicks/nest Both Male and Female Adult 7 pairs Shoreline Park Exposure Factor Datasets Santa Clara
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
Age at Fledging, Metamorphosis, Weaning review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Time of Mating/ Laying review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Dietary Composition review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Time of Molt review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Clutch or Litter Size review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
Duration of Incubation or Gestation review Not Reported Not Reported Not Reported Exposure Factor Datasets CANADA, MEXICO, USA
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
Hatching Success 3.5 mean hatching success in artificial burrows eggs hatched/eggs laid Not Reported Juvenile 8 clutches, 66 eggs New Mexico State University Exposure Factor Datasets 2.9 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:

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
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