| Observation | Date | Location | Number of Birds | Data Source |
|---|---|---|---|---|
| Data | 2000-04-24 | Huichica Creek Pond | 0 | Statewide Survey, 2000 (unpublished) |
| Data | 2000-04-21 | Juliana Vineyard Pond #1 | 0 | Statewide Survey, 2000 (unpublished) |
| Data | 2000-04-21 | Juliana Vineyard Pond #2 | 24 | Statewide Survey, 2000 (unpublished) |
| Data | 2000-04-21 | Saint Supéry Vineyards | 80 | Statewide Survey, 2000 (unpublished) |
| Data | 1999-04-24 | Juliana Vineyard Pond #2 | 400 | Statewide Survey, 1999 (unpublished) |
| Data | 1999-04-24 | Saint Supéry Vineyards | 200 | Statewide Survey, 1999 (unpublished) |