| Exposure Endpoint Type | Endpoint Description | Endpoint Value | Sample Size | Units | Life Cycle Stage | Specific Location | Range | California Counties | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | range of mean population densities | 1 marsh | birds/acre | Not Reported | Dumbarton Bridge Marsh | 0.98-1.21 | San Francisco | Exposure Factor Datasets | |
| Time of Nesting | beginning of nesting | April | 1 marsh | Not Reported | Dumbarton Bridge Marsh | San Francisco | Exposure Factor Datasets | ||
| Clutch or Litter Size | mean clutch size | 7.22 | 27 nests | Not Reported | Dumbarton Bridge Marsh | 5-9 | San Francisco | Exposure Factor Datasets | |
| Duration of Incubation or Gestation | estimated incubation period in field | 3 nests | d | Not Reported | Dumbarton Bridge Marsh | 23-27 | San Francisco | Exposure Factor Datasets |
