| Exposure Endpoint Type | Endpoint Description | Endpoint Value | Sample Size | Units | Life Cycle Stage | Specific Location | Range | Type |
|---|---|---|---|---|---|---|---|---|
| Time of Nesting | period from onset of egg laying through fledging | April-October | ~81 nests/year | Adult | Madelia Research Center, Watonwan County | Exposure Factor Datasets | ||
| Population Density | range of total annual nesting population, over 3 yrs | 65-100 pairs | pairs | Adult | Madelia Research Center, Watonwan County | 65-100 | Exposure Factor Datasets | |
| Fledging or Weaning Rate | number of young fledged per nesting attempt | ~81 nests/year | fledglings/nest | Fledgling | Madelia Research Center, Watonwan County | 1.09-1.21 | Exposure Factor Datasets | |
| Survival/ Mortality | percent of eggs or young lost before and after hatch | 37.3% (before hatch), 9.2% (after hatch) | 634 eggs | Embryo, Juvenile | Madelia Research Center, Watonwan County | Exposure Factor Datasets |
