| Observation | Date | Location | Number of Birds | Data Source |
|---|---|---|---|---|
| Data | 2008-04-25 | Plainsburg Road | 0 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Owens Creek | 10000 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Le Grand Mine | 0 | Statewide Survey, 2008 (unpublished) |
| Data | 2005-06-03 | North Grasslands Wildlife Area - China Island Unit | 200 | Statewide Survey, June 2005 (unpublished) |
| Data | 2005-06-03 | North Grasslands Wildlife Area - Salt Slough Unit | 100 | Statewide Survey, June 2005 (unpublished) |