| Exposure Endpoint Type | Endpoint Description | Endpoint Value | Sample Size | Units | Life Cycle Stage | Specific Location | California Counties | Type |
|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | nesting periods of early (first wave) and late (second wave) birds | May-early Jul (first wave), late May-Aug (second wave) | 8-10 pairs (first wave), 29 pairs (second wave) | Adult | NASA Island, Seal Beach National Wildlife Refuge | Orange | Exposure Factor Datasets | |
| Fledging or Weaning Rate | mean number of fledglings produced per nesting pair | 0.50 (first wave), 0.58 (second wave) | 10 nests (first wave), 33 nests (second wave) | fledglings/pair | Fledgling | NASA Island, Seal Beach National Wildlife Refuge | Orange | Exposure Factor Datasets |
| Hatching Success | proportions of eggs hatched of eggs laid | 100% (first wave), 82% (second wave) | 54 eggs (second wave) | Hatchling | NASA Island, Seal Beach National Wildlife Refuge | Orange | Exposure Factor Datasets | |
| Clutch or Litter Size | average clutch sizes for early and late nesters | 2.33 (first wave), 1.70 (second wave) | 10 nests (first wave), 33 nests (second wave) | eggs/clutch | Adult | NASA Island, Seal Beach National Wildlife Refuge | Orange | Exposure Factor Datasets |
| Age at Sexual Maturity | age of birds nesting for the first time | 2 | 10 pairs | yr | Adult | NASA Island, Seal Beach National Wildlife Refuge | Orange | Exposure Factor Datasets |
