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| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Dietary Composition | northern anchovy, Engraulis mordax (80%) | percent of estimated prey biomass, from pre-fledgling regurgitations | Not Reported | Nestling | Southern California Bight | 3 colonies | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Fledging or Weaning Rate | range of mean fledging rates (number of fledglings per built nest) over a 6 year period | 0.18-0.88 | Not Reported | Fledgling | West Anacapa Island | 76-1258 nests/year | Exposure Factor Datasets |
| Fledging or Weaning Rate | range of mean fledging rates (number of fledglings per built nest) over a 6 year period | 0.23-1.20 | Not Reported | Fledgling | Isla Coronado Norte | 76-1258 nests/year | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Foraging Distance | distance travelled by radiotagged bird | 10.2-49.4 | km/day | Not Reported | Juvenile | south Monterey Bay | 1 bird | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 69% | estimated survival rate of radiotagged rehabilitated oiled birds at 150-180 days post-release | Not Reported | Adult | Southern California Bight | 16 | Exposure Factor Datasets |
| Survival/ Mortality | 94% | estimated survival rate of radiotagged control birds at 150-180 days post-release | Not Reported | Adult | Southern California Bight | 17 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Time of Migration or Dispersal | early to mid-summer | time of northward movement from southern breeding areas | Both Male and Female | Both Adults and Juveniles | northern and central coast | 3 years | Exposure Factor Datasets | ||
| Population Density | 0.23 | mean density at sea off central and northern coast | 0.23 SE | birds/km^2 | Both Male and Female | Both Adults and Juveniles | central and northern coast | 3 years | Exposure Factor Datasets |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Tox Exposure | Toxicity Endpoint Type | Tox Exposure Duration | Tox Exposure Technique | Type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DDD (4,4'-), DDE (4,4'-), DDT (4,4'-) | significantly decreased compared to pre-1943 samples | eggshell thickness (of intact or broken eggshells) | Female | Adult | Anacapa Island and Isla Coronado Norte | 86 eggs | 0.03 ppm DDT plus TDE, 0.12 ppm DDE, wet wt in anchovies | TOX-REPRO - physiology | NR | diet | Toxicity Factor Datasets |
| DDD (4,4'-), DDE (4,4'-), DDT (4,4'-) | increased compared to positive control (1969 data) | mean number of fledglings produced per nest in 1974 | Both Male and Female | Fledgling | Anacapa Island and Isla Coronado Norte | 1286 nests | 0.03 ppm DDT plus TDE, 0.12 ppm DDE, wet wt in anchovies | TOX-REPRO - reproductive success | NR | diet | Toxicity Factor Datasets |
| DDD (4,4'-), DDE (4,4'-), DDT (4,4'-) | non-detectable DDT plus TDE, 96.6 ppm DDE, lipid wet basis | concentration in egg contents | Female | Adult | Anacapa Island and Isla Coronado Norte | 39 eggs | 0.03 ppm DDT plus TDE, 0.12 ppm DDE, wet wt in anchovies | TOX-EXP IND - accumulation | NR | diet | Toxicity Factor Datasets |
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