Colorado
Great Horned Owl (Bubo virginianus)
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
Deer Mouse (Peromyscus maniculatus)
| Exposure Endpoint Type | Chemical | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| DICHLOROPHENOXY-ACETIC ACID (2,4-) | no effect | changes in population density; treated versus control site | Not Reported | Both Adults and Juveniles | 6 study areas/dose | Gunnison County and Saquache County, (elev., 8500 - 9300 ft.) | Toxicity Factor Datasets | |||
| DICHLOROPHENOXY-ACETIC ACID (2,4-) | no effect | mean litter size, based upon number of viable embryos or placental scars | Female | Adult | 66-77 animals | Gunnison County and Saquache County, (elev., 8500 - 9300 ft.) | Toxicity Factor Datasets | |||
| Clutch or Litter Size | 5.27 | mean litter size based upon number of visible embryos | #/litter | Female | Adult | 77 | Gunnison County and Saquache County, (elev., 8500 - 9300 ft.) | Exposure Factor Datasets | 0.13 |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| LEAD COMPOUNDS | Bone; 52.10 +/- 33.81SD, Kidney; 8.46 +/- 3.03SE, Liver; 3.29 +/- 1.77SD, Brain; 0.84 +/- 0.25SE, Feces; 153.6+/- 103.5SD ppm (dry weight) | Mean concentrations in deer mice from roadside site (ppm, dry weight). Feces collected from nest box after 1 yr accumulation. Roadside tissue concentrations significantly different from control site. | Both Male and Female | Adult | 9 - 10 animals | Interstate 25, Denver (elev. 1884-2018 m) | Toxicity Factor Datasets |
| LEAD COMPOUNDS | no effect | number of litters per 100 breeding females, measured by observing litters in nesting boxes at a control and roadside site | Female | Adult | 50 nesting boxes, 66 observation periods nimals | Interstate 25, Denver (elev. 1884-2018 m) | Toxicity Factor Datasets |
| LEAD COMPOUNDS | significant increase | mortality during winter, estimated by number of mice recaptured the following breeding season at a control and roadside site | Both Male and Female | Adult | 98 - 180 tagged animals | Interstate 25, Denver (elev. 1884-2018 m) | Toxicity Factor Datasets |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| DIELDRIN | increase | population size at contaminated vs reference sites | Both Male and Female | Both Adults and Juveniles | Not Reported | Rocky Mountain Arsenal National Wildlife Refuge | Toxicity Factor Datasets |
| DIELDRIN | increase | % of female deer mice exhibiting signs of reproduction increased as dieldrin levels increased at contaminated vs control sites | Female | Adult | Not Reported | Rocky Mountain Arsenal National Wildlife Refuge | Toxicity Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Diptera adult (0.5); Coleoptera adult (9.8); Coleoptera egg (0.2); Coleoptera larva (4.8); Hemiptera - Leaf hopper (4.6); Hymenoptera - Ant (0.2); Lepidoptera adult (1.9); Lepidoptera larva (6.0); Orthoptera - Cricket (0.4), Grasshopper (5.6); Spiders (2.4); Centipedes (0.1); Unidentified arthropods (1.7); Tissues of small animals (0.4); Forbs (7.8); Grasses and Sedges (3.4); Shrubs (2.2); Fungi - Endogone (1.1); Lichens (0.4); Mosses (0.1); Seeds (39.0). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 656 | Pawnee National Grassland | Exposure Factor Datasets |
| Dietary Composition | ANIMAL MATTER: Coleoptera adults (10.9); Coleoptera larvae (24.4); Grasshoppers (2.6); Leaf hoppers (0.1); Lepidoptera adults (2.1); Lepidoptera larvae (17.6); Spiders (2.8); PLANT MATTER: Seeds (11.4); Total forbs (9.5) - Kochia scoparia (3.6); Total grasses and sedges (1.7); Total shrubs (1.7). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 123 | Pawnee National Grassland | Exposure Factor Datasets |
| Dietary Composition | ANIMAL MATTER: Coleoptera adults (10.8); Coleoptera larvae (1.4); Grasshoppers (5.7); Leaf hoppers (3.4); Lepidoptera adults (4.4); Lepidoptera larvae (1.3); Spiders (2.5); PLANT MATTER: Seeds (40.3); Total forbs (10.4) - Kochia scoparia (6.7); Total grasses and sedges (3.5); Total shrubs (1.1). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 92 | Pawnee National Grassland | Exposure Factor Datasets |
| Dietary Composition | ANIMAL MATTER: Coleoptera adults (9.8); Coleoptera larvae (1.1); Grasshoppers (7.7); Leaf hoppers (1.7); Lepidoptera adults (1.3); Lepidoptera larvae (1.0); Spiders (2.4); PLANT MATTER: Seeds (47.8); Total forbs (4.8) - Kochia scoparia (3.1); Total grasses and sedges (4.3); Total shrubs (0.9). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 102 | Pawnee National Grassland | Exposure Factor Datasets |
| Dietary Composition | ANIMAL MATTER: Coleoptera adults (7.6); Coleoptera larvae (0.2); Grasshoppers (5.1); Leaf hoppers (2.1); Lepidoptera adults (0.2); Lepidoptera larvae (0.5); Spiders (2.5); PLANT MATTER: Seeds (65.7); Total forbs (6.3) - Kochia scoparia (3.2); Total grasses and sedges (1.3); Total shrubs (0.6). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 134 | Pawnee National Grassland | Exposure Factor Datasets |
| Dietary Composition | ANIMAL MATTER: Coleoptera adults (4.8); Coleoptera larvae (0.1); Grasshoppers (2.5); Leaf hoppers (7.0); Lepidoptera adults (0.5); Lepidoptera larvae (1.3); Spiders (0.3); PLANT MATTER: Seeds (65.4); Total forbs (4.3) - Kochia scoparia (0.6); Total grasses and sedges (4.8); Total shrubs (2.6). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 97 | Pawnee National Grassland | Exposure Factor Datasets |
| Dietary Composition | ANIMAL MATTER: Coleoptera adults (11.0); Coleoptera larvae (3.6); Grasshoppers (6.4); Leaf hoppers (13.3); Lepidoptera adults (2.3); Lepidoptera larvae (19.4); Spiders (2.6); PLANT MATTER: Seeds (22.5); Total forbs (4.7) - Kochia scoparia (1.9); Total grasses and sedges (4.0); Total shrubs (3.8). | estimated percent volume, by ranking method, of total matter in stomach contents | % | Both Male and Female | Both Adults and Juveniles | 108 | Pawnee National Grassland | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 0.02 | area of subniven runway systems | ha | Male | Adult | 5 | eastern slope, Colorado Rocky Mountains (elev., 3120 m) | Exposure Factor Datasets | 1.02 SE |
| Home Range | 0.01 | area of subniven runway systems | ha | Female | Adult | 5 | eastern slope, Colorado Rocky Mountains (elev., 3120 m) | Exposure Factor Datasets | 0.36 SE |
| Home Range | 0.03 | ha | Male | Adult | 18 | eastern slope, Colorado Rocky Mountains (elev., 3120 m) | Exposure Factor Datasets | 0.54 SE | |
| Home Range | 0.02 | ha | Female | Adult | 9 | eastern slope, Colorado Rocky Mountains (elev., 3120 m) | Exposure Factor Datasets | 0.55 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of mean body weights measured over 3 years | g | Both Male and Female | Both Adults and Juveniles | 144-164 | Rabbit Ears Pass, subalpine meadows (elev., 3020 m) | Exposure Factor Datasets | |
| Population Density | range of mean densities measured over 3 years | #/acre | Both Male and Female | Both Adults and Juveniles | Not Reported | Rabbit Ears Pass, subalpine meadows (3020 m) | Exposure Factor Datasets | |
| Dietary Composition | seeds (57.2-60.3 %), arthropods (13.0-21.8 %), cutworms (9.4-13.2%), flowers (1.1-4.5 %), leaves (1.9-8.2 %), fruit (1.0%), fungus (5.4%) | dietary composition based on stomach content analysis over two years | Both Male and Female | Both Adults and Juveniles | 81-159 | Rabbit Ears Pass, subalpine meadows (3020 m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of mean litter sizes for 2 yrs; based on embryo counts | #/litter | Female | Adult | 7 - 8 litters | San Juan Mountains (elev., 3200 m) | Exposure Factor Datasets | ||
| Survival/ Mortality | 67 | survival of juveniles to an age of 4 wks | % | Both Male and Female | Juvenile | 19 - 23 litters | San Juan Mountains (elev., 3200 m) | Exposure Factor Datasets | 0 - 4 wks |
Gopher Snake (Pituophis catenifer formerly Pituophis melanoleucus)
| Chemical | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| PLUTONIUM (elemental), RADIONUCLIDES | 239 Pu activities: lung, <0.02; liver, 0.03; bone, 0.05 dpm/g | Not Reported | Not Reported | 2 | Energy Research and Development Administration Rocky Flats, Denver | Toxicity Factor Datasets |
Peregrine Falcon (Falco peregrinus)
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| HEPTACHLOR EPOXIDE | negative correlation | correlation of heptachlor epoxide concentration in eggs and eggshell thickness | Female | Adult | 38 eggs | Toxicity Factor Datasets | |
| DDE (4,4'-) | 21:0.09 | ratio of average concentration of DDE in eggs to average concentration of DDE in prey items | Female | Adult | 12 prey species, pooled samples of 7-10 individuals | Toxicity Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 16 | average maximum loss rate; estimated by number of individuals returning to nest in 2 successive yrs | % | Both Male and Female | Adult | 23 - 34 cases | Exposure Factor Datasets |
Burrowing Owl (Athene cunicularia formerly Speotyto cunicularia)
| 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 | |
| Body Weight - Mean | 146 | g | Male | Adult | 38 birds | Rocky Mountain Arsenal National Wildlife Area | Exposure Factor Datasets | 1.9 (SE) |
Willow Flycatcher (Empidonax traillii)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Fledging or Weaning Rate | 56.3% | percent of unparasitized nests with at least one fledgling | Not Reported | Fledgling | 16 nests | Illinois River, Arapahoe National Wildlife Refuge (elev. 2,500 m) | Exposure Factor Datasets |
| Fledging or Weaning Rate | 18.2% | percent of parasitized nests with at least one fledgling | Not Reported | Fledgling | 11 nests | Illinois River, Arapahoe National Wildlife Refuge (elev. 2,500 m) | Exposure Factor Datasets |
Loggerhead Shrike (Lanius ludovicianus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutches or Litters per year | 1 | clutches/yr | Both Male and Female | Adult | 77 pairs | Pawnee National Grassland | Exposure Factor Datasets | |
| Clutch or Litter Size | 6.39 | average clutch size, 4 years | eggs/clutch | Female | Adult | 77 pairs | Pawnee National Grassland | Exposure Factor Datasets |
| Duration of Incubation or Gestation | 16 | incubation period | d | Not Reported | Embryo | 330 hatched eggs | Pawnee National Grassland | Exposure Factor Datasets |
| Age at Fledging, Metamorphosis, Weaning | 17 | normal fledging period | d | Not Reported | Fledgling | 232 fledged birds | Pawnee National Grassland | Exposure Factor Datasets |
| Fledging or Weaning Rate | 5.40 | average number of fledglings produced per nest | fledglings/nest | Not Reported | Fledgling | 65 successful nests | Pawnee National Grassland | Exposure Factor Datasets |
| Hatching Success | 5.69 | average number of eggs hatched per successful nest | eggs/nest | Not Reported | Hatchling | 65 successful nests | Pawnee National Grassland | Exposure Factor Datasets |
Southwestern Willow Flycatcher (Empidonax traillii ssp. extimus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Fledging or Weaning Rate | 18% | percent of nests that fledged at least one young | % | Both Male and Female | Both Adults and Juveniles | 17 nest attempts (in 5 sample years) | Colorado River | Exposure Factor Datasets | |
| Clutch or Litter Size | 3 | mean clutch size | eggs/nest | Female | Adult | 3 nests | Colorado River | Exposure Factor Datasets | |
| Time of Mating/ Laying | May 30 (onset) | date when first eggs found | Female | Adult | 17 nest attempts (in 5 sample years) | Colorado River | Exposure Factor Datasets | ||
| Time of Fledging or Metamorphosis | June 29 (earliest fledging) - July 13 (latest fledging) | dates of earlies and latest recording fledging | Both Male and Female | Fledgling | 17 nest attempts (in 5 sample years) | Colorado River | Exposure Factor Datasets | ||
| Territory Size | 0.10 | breeding territory size | ha | Both Male and Female | Adult | 7 pairs | Colorado River | Exposure Factor Datasets | 0.05 SD |
| Territory Size | 0.5 | territory size of unpaired male | ha | Male | Adult | 1 | Colorado River | Exposure Factor Datasets |
Sideblotched Lizard (Uta stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 3.2 | average clutch size based on counts of yolked follicles, eggs or corpora lutea | eggs/clutch | Female | Adult | 256 | Mesa County | Exposure Factor Datasets |
| Population Density | range of densities over 2 yrs | #/acre | Both Male and Female | Adult | Not Reported | Mesa County | Exposure Factor Datasets | |
| Home Range | 0.38 | home range estimated using probability density function (95%) | acre | Male | Adult | Not Reported | Mesa County | Exposure Factor Datasets |
| Home Range | 0.23 | home range estimated using probability density function (95%) | acre | Female | Adult | Not Reported | Mesa County | Exposure Factor Datasets |
Northern Flicker (Colaptes auratus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | range of home range size based on telemetry location data | ha | Not Reported | Adult | 4 birds, 20-99 radio fixes per bird | Lakewood, Jefferson County | Exposure Factor Datasets | |
| Foraging Distance | range of distances between night roost location and the following day's locations | km | Not Reported | Adult | 4 birds, 20-99 radio fixes per bird | Lakewood, Jefferson County | Exposure Factor Datasets | |
| Body Weight - Mean | 140 | average body weight at time of capture | g | Not Reported | Adult | 4 birds | Lakewood, Jefferson County | Exposure Factor Datasets |
Western Meadowlark (Sturnella neglecta)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Territory Size | 12,406.8 | average territory size in mated birds | m^2 | Male | Adult | 17 birds | Boulder | Exposure Factor Datasets |
| Territory Size | 3,228.1 | average territory size of unmated birds | m^2 | Male | Adult | 7 birds | Boulder | Exposure Factor Datasets |
Boreal Toad (Anaxyrus boreas ssp. boreas formerly Bufo boreas ssp. boreas)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 40.2 | g | Both Male and Female | Adult | 50 | East River Valley, Gothic, Gunnison county (elev., 3000 - 3355m) | Exposure Factor Datasets | 5.62 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Nematoda (3.0%); Gastropoda (3-21.2%); Arachnida (3.0-42.5%); Orthoptera (3.0%); Coleoptera (3.0-51.5%); Hemiptera (3.0%); Neuroptera (3.0%); Lepidoptera (12.1%); Diptera (3.0 -24.2%); Hymenoptera (3.0-88.1%) | % of stomachs containing prey items | % | Not Reported | Not Reported | 33 | Left-hand reservoir, Boulder county (elev., 10,638ft) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Sept. - May | time of hibernation | Not Reported | Adult | 30 | Boulder county (elev., 2,975m) | Exposure Factor Datasets |
Coyote (Canis latrans)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 0.87 | mean annual survival rate | Both Male and Female | Adult | 52 | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | > 2yrs | |
| Survival/ Mortality | 0.52 | mean annual survival rate | Both Male and Female | Juvenile | 16 | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | 1-2 yrs | |
| Population Density | 0.29 | pre-whelping density | #/km2 | Both Male and Female | Both Adults and Juveniles | Not Reported | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | |
| Clutch or Litter Size | 3.2 | pups/litter | Female | Adult | 16 | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | ||
| Time of Migration or Dispersal | Oct. - Jan. | Both Male and Female | Both Adults and Juveniles | 13 | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | |||
| Home Range | range across 4 yrs and 4 habitat types | km2 | Both Male and Female | Not Reported | 4 - 16/sample | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | see citation | figure of seasonal changes in diet based on scat analysis; mean % volume of food items | % | Not Reported | Not Reported | 3270 scats | Pinon Canyon Maneuver Site, Las Animas County (elev., 1310 - 1740 m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 11.3 | mean annual home range of resident coyotes | km2 | Both Male and Female | Both Adults and Juveniles | 56 | Pinon Canyon Maneuver Site, Las Animas County (elev., 1310-1740 m) | Exposure Factor Datasets | 5.8 SD |
| Home Range | 106.5 | mean annual home range of transient coyotes | km2 | Both Male and Female | Both Adults and Juveniles | 16 | Pinon Canyon Maneuver Site, Las Animas County (elev., 1310-1740 m) | Exposure Factor Datasets | 27.7 SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Mammals: Sylvilagus sp. (50.6 - 73.1%); Lepus sp. (0 - 5.0%); Neotoma (0 - 5.5%); Microtus (0-11.1%); Cricetid mice (1.2-8.9%); Bos taurus (1.9 - 7.9%); Odocoileus hemionus (3.6 - 15.5%) | range of % relative dry weight of major food items (>5%) measured at 3 sites, based on scat analysis | % | Not Reported | Not Reported | 42 - 48/ site | Montezuma, La Plata and Saguache Counties | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | 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 | 54 | Rocky Flats Nuclear Weapons Plant, Denver | Exposure Factor Datasets |
Audubon's Cottontail (Sylvilagus audubonii)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Population Density | 6.6 | #/mi2 | Not Reported | Not Reported | 31 | Pawnee National Grasslands | Exposure Factor Datasets | 5.4 - 7.8 (95% CL) |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Grasses, 20 species (0 - 22.2%); Forbs, 16 species (0 - 17.4%); Shrubs, 1 species (0.4 - 1.5%); Cactus, 1 species (0 - 0.1%) | range of % composition of species over 2 yrs; estimated as sum of all fragments per food species from all stomachs divided by sum of fragments from all stomachs | % | Both Male and Female | Both Adults and Juveniles | 18 - 30 | Fort Collins, Larimer County (elev. 1650-2200 m) | Exposure Factor Datasets |
| Dietary Composition | Grasses, 20 species (0 - 21.6%); Forbs, 16 species (0 - 12.4%); Shrubs, 1 species (1.1%); Cactus, 1 species (1.9%) | range of % composition of species; estimated as sum of all fragments per food species from all stomachs divided by sum of fragments from all stomachs | % | Both Male and Female | Both Adults and Juveniles | 29 | Fort Collins, Larimer County (elev. 1650-2200 m) | Exposure Factor Datasets |
American Kestrel (Falco sparverius)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Fat (total or %) | 6.01 | percent body fat calculated from total body electrical conductivity | % | Male | Adult | 12 | Cape May | Exposure Factor Datasets | migrating | 1.92 SE |
Long-tailed Weasel (Mustela frenata)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Microtus (52%); Peromyscus (19.5%); Eutamias (18.2%); Cynomys (2.6%); Thomomys (3.9%); Citellus (2.6%); Ochotona (1.3%); Vespula (6.5%); Tettigoniidae (2.6%) | % occurrence in scats | % | Not Reported | Not Reported | 77 scats | Gunnison County (elev., >7500 ft) | Exposure Factor Datasets |
| Population Density | 2 | #/mi2 | Not Reported | Not Reported | Not Reported | Gunnison County (elev., >7500 ft) | Exposure Factor Datasets | |
| Home Range | acres | Not Reported | Not Reported | Not Reported | Gunnison County (elev., >7500 ft) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Dietary Composition | rodents (33.4%), invertebrates (55.6%), other (10.7%) | percent occurrence of prey items in pellets | Both Male and Female | Adult | 47 burrows | Rocky Mountain Arsenal | Exposure Factor Datasets |
Comment
