| Observation | Date | Location | Number of Birds | Data Source |
|---|---|---|---|---|
| Data | 2008-04-25 | North Grasslands Wildlife Area - China Island Unit | 0 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | North Grasslands Wildlife Area - Salt Slough Unit | 0 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Basalt Road | 500 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | O'Neill Forebay | 0 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Volta Lake Marsh | 1500 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Los Banos Wildlife Area 42 | 9000 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Honey Lake | 33000 | Statewide Survey, 2008 (unpublished) |
| Data | 2008-04-25 | Oxbow | 0 | Statewide Survey, 2008 (unpublished) |
| Data | 2005-04-23 | Oxbow | 300 | Statewide Survey, 2005 (unpublished) |