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| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 15.24 | unskinned weight estimated from skinned weight | kg | Female | Adult | New Brunswick and Nova Scotia | 23 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | leporids (68.5%); Sigmodon spp. (31.8%); aves (5.9%); grass (16.3%); Juniperus deppeana (7.2%); other vegetation (20.0%); other materials (9.6%) | overall % occurrence of major food items (>5%) in scats | % | Not Reported | Not Reported | Appleton-Whittel Research Ranch, Santa Cruz County (elev., 1500 m) | 759 scats | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 10.6 | yearly mean basal metabolic rate; range of seasonal means | 9.8 - 11.6 | L O2/kg/d | Both Male and Female | Adult | 4 | Exposure Factor Datasets |
| Metabolic Rate | 163.5 | field metabolic rate estimated as 3 times basal metabolic rate | kcal/kg | Both Male and Female | Adult | 4 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 7.8 | mean den area; land area around a den or rendezvous used by group | 7.0 - 9.3 | km2 | Female | Adult | Missouri River Breaks | 3 | Exposure Factor Datasets |
| Home Range | 9.7 | mean den area; land area around a den or rendezvous used by group | 0.3 - 15.5 | km2 | Male | Adult | Missouri River Breaks | 12 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | grass species (78%); meadow vole (73%); northern pocket gopher (43%); insects (40%); passerines (30%); lagomorphs (24%); cricetid mice (19%); mule deer (13%) | % occurrence of food items in scats | % | Not Reported | Not Reported | Rocky Flats Nuclear Weapons Plant, Denver | 54 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| 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 | Univ. of Calif., Los Angeles campus | 25 lbs of pellets | Exposure Factor Datasets |
| 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 | Santa Monica Mountains (1 ledge) | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | maximum body weights achieved by captively raised chicks | 46-56 | oz | Not Reported | Juvenile | captured in Kansas | 2 birds | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|
| 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 |
| Survival/ Mortality | 46% | mean percent mortality within the first year of banding based on band return data, 1951-1962 | Not Reported | Juvenile | 97 birds | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | density based on call counts | 14-25 | birds/2000 ac | Both Male and Female | Both Adults and Juveniles | San Joaquin Experimental Range | 7 counts | Exposure Factor Datasets | |
| Dietary Composition | cottontail (61.1%), woodrat (17.9%), kangaroo rat (4.5%), pocket gopher (4.3%), gopher snake (3.7%), ground squirrel (2.4%), other spp (birds, reptiles, amphibians, invertebrates; 6.1%) | percent occurrence by weight in pellets | Not Reported | Not Reported | San Joaquin Experimental Range | 654 pellets, 1471 prey items | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | 0.12-0.22 | pairs/mi^2 | Both Male and Female | Adult | southern Green County | 12-22 pairs (3 study years) | Exposure Factor Datasets | ||
| Time of Mating/ Laying | Feb 5-15 | peak period of egg laying | Female | Adult | southern Green County | 11-17 nests (3 study years) | Exposure Factor Datasets | ||
| Fledging or Weaning Rate | mean number of fledglings produced per successful nest | 1.6-2.0 | fledglings/nest | Not Reported | Fledgling | southern Green County | 11-17 nests (3 study years) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Mar-Apr | time of peak nesting activity | Both Male and Female | Adult | Stanford University Campus | Not Reported | Exposure Factor Datasets | ||
| Territory Size | approximate range of nesting territory diameters | 50-400 | yd | Both Male and Female | Adult | Stanford University Campus | Not Reported | Exposure Factor Datasets | |
| Duration of Incubation or Gestation | 13 | incubation period from start to hatching | d | Not Reported | Embryo | Stanford University Campus | 1 clutch | Exposure Factor Datasets | |
| Body Weight - Mean | range of individual body weights | 0.65-0.72 | g | Not Reported | Hatchling | Stanford University Campus | 2 birds | Exposure Factor Datasets | |
| Time of Fledging or Metamorphosis | 14 | age at which young left the nest | d | Not Reported | Not Reported | Stanford University Campus | 1 brood | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|
| Time of Migration or Dispersal | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Dietary Composition | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Population Density | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Time of Mating/ Laying | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Time of Mating/ Laying | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Time of Fledging or Metamorphosis | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Time of Molt | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Duration of Incubation or Gestation | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Age at Sexual Maturity | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Growth Rate | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|
| Time of Migration or Dispersal | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Dietary Composition | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Territory Size | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Age at Fledging, Metamorphosis, Weaning | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Time of Mating/ Laying | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Time of Molt | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Clutches or Litters per year | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Duration of Incubation or Gestation | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
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