Species
Filter by Species
Filter by Toxicity Endpoint Type
Filter by Exposure Endpoint Type
Filter by Chemical
Filter by Location
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Hatching Success | range in proportions of total eggs hatching vs. total eggs laid (for two years) | 147/238 to 147/262 | eggs hatched/eggs produced | Not Reported | Hatchling | Gibraltar Reservoir | 238-262 eggs (two yrs) | Exposure Factor Datasets | |
| Fledging or Weaning Rate | range in proportions of total chicks fledging vs. total chicks hatched (for two years) | 85/147 - 91/147 | chicks fledged/chicks hatched | Not Reported | Fledgling | Gibraltar Reservoir | 147 eggs hatched (2 yrs) | Exposure Factor Datasets | |
| Clutches or Litters per year | annual clutch numbers per pair observed over 2 years | 1-2 | clutches/yr | Both Male and Female | Adult | Gibraltar Reservoir | 43-48 pairs (2 yrs) | Exposure Factor Datasets | |
| Foraging Distance | up to several hundred yards | maximum observed distance travelled by birds from the nest | Both Male and Female | Adult | Gibraltar Reservoir | 32 pairs (1 yr) | Exposure Factor Datasets | ||
| Time of Migration or Dispersal | mid Jul to early Sep | period of departure from the breeding area by migrants | Both Male and Female | Both Adults and Juveniles | Gibraltar Reservoir | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Fledging or Weaning Rate | 63 | percent of birds that successfully fledged one young | % | Male | Adult | Gibraltar Reservoir | 98 birds | Exposure Factor Datasets |
| Fledging or Weaning Rate | 66 | percent of birds that successfully fledged one young | % | Female | Adult | Gibraltar Reservoir | 98 birds | Exposure Factor Datasets |
| Survival/ Mortality | 48/312 | proportion of young banded as nestlings or fledglings returning to study area in subsequent yrs | birds returning/birds banded | Both Male and Female | Juvenile | Gibraltar Reservoir | 312 birds | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|
| Population Density | review | historical and recent population data | Not Reported | Adult | Not Reported | Exposure Factor Datasets |
| Fledging or Weaning Rate | review | reproductive success data | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | number of singing males per linear km of suitable habitat | 3-5 | birds/km | Male | Adult | various CA locations | 8 survey sites | Exposure Factor Datasets | |
| Fledging or Weaning Rate | 21 | percent of active nests that fledged at least one young | % | Both Male and Female | Adult | various CA locations | 14 nests | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | approx. 15 | incubation period up to time of pipping | 14d, 21 hr - 15 d, 8 hr | d | Not Reported | Embryo | 8 eggs | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Hatching Success | 84 | percent of eggs hatched of total number laid | % | Not Reported | Hatchling | upper Santa Cruz River | 24 nests, 70 eggs | Exposure Factor Datasets |
| Fledging or Weaning Rate | 59.9 | percent of eggs producing fledglings of total eggs laid | % | Not Reported | Hatchling | upper Santa Cruz River | 24 nests, 70 eggs | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Longevity | 6 -11 | age of oldest identified banded individual | yr-mo | Not Reported | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Territory Size | range in sizes of areas used by nesting pairs | 0.26-3.1 | ac | Both Male and Female | Adult | Lawrence | 9 pairs | Exposure Factor Datasets | |
| Clutch or Litter Size | 3.39 | mean clutch size (over 2 years) | eggs/clutch | Female | Adult | Lawrence | 33 records | Exposure Factor Datasets | |
| Duration of Incubation or Gestation | 14 | d | Not Reported | Embryo | Lawrence | Not Reported | Exposure Factor Datasets | ||
| Age at Fledging, Metamorphosis, Weaning | period from hatching to leaving nest | 9-12 | d | Not Reported | Fledgling | Lawrence | 8 birds | Exposure Factor Datasets | |
| Clutches or Litters per year | number of broods raised in one nesting season | 1-2 | clutches/yr | Both Male and Female | Adult | Lawrence | 9 pairs | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Territory Size | nesting territory size | 2-3 | ac | Both Male and Female | Adult | Bloomington | 5 pairs | Exposure Factor Datasets | |
| Time of Mating/ Laying | May 25, 26 (first clutch); June 10, 17 (second clutch) | initiation dates of first and second clutches | Both Male and Female | Adult | Bloomington | 2 nests | Exposure Factor Datasets | ||
| Body Weight - Mean | 1-1.8 | g | Not Reported | Hatchling | Bloomington | 3 birds | Exposure Factor Datasets | ||
| Duration of Incubation or Gestation | 13 d, 16 hr - 14 d, 2 hr | Not Reported | Embryo | Bloomington | 3 eggs | Exposure Factor Datasets | |||
| Age at Fledging, Metamorphosis, Weaning | period from hatching to leaving nestd | 10.5-12 | d | Not Reported | Fledgling | Bloomington | 6 birds | Exposure Factor Datasets | |
| Body Weight - Mean | 9.1-9.5 | g | Male | Adult | Bloomington | 3 birds | Exposure Factor Datasets | ||
| Body Weight - Mean | 9.6-11.0 | g | Female | Adult | Bloomington | 4 birds | Exposure Factor Datasets | ||
| Body Weight - Mean | 8.3 | mean body weight | g | Not Reported | Nestling | Bloomington | 3 birds | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 14 d, 16 hr to 15 d | incubation period up to time of hatching | Not Reported | Embryo | 1 egg | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Longevity | 12-6 | age of oldest identified banded individual | yr-mo | Not Reported | Adult | Not Reported | 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 |
Comment
