| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Black-bellied Whistling-Duck | X | X | X | ||||||||||
| Fulvous Whistling-Duck | X | X | X | ||||||||||
| Greater White-fronted Goose | X | X | X | X | X | X | X | X | X | X | X | X | |
| Emperor Goose | X | ||||||||||||
| Snow Goose | X | X | X | X | X | X | X | X | X | X | |||
| Ross's Goose | X | X | X | X | X | X | X | X | X | ||||
| Canada Goose | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Cackling Goose | X | X | |||||||||||
| Brant | X | X | X | X | X | X | X | X | |||||
| Mute Swan | X | X | X | X | X | ||||||||
| Black Swan | X | X | |||||||||||
| Trumpeter Swan | X | X | X | X | |||||||||
| Tundra Swan | X | X | X | X | X | X | X | X | X | X | |||
| Muscovy Duck | X | ||||||||||||
| Wood Duck | X | X | X | X | X | X | X | X | X | X | X | ||
| Gadwall | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Eurasian Wigeon | X | X | X | X | X | X | X | ||||||
| American Wigeon | X | X | X | X | X | X | X | X | X | X | X | X | X |
| American Black Duck | X | X | |||||||||||
| Mallard | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Mexican Duck | X | ||||||||||||
| Mottled Duck | X | X | X | X | |||||||||
| Blue-winged Teal | X | X | X | X | X | X | X | X | X | X | X | X | |
| Cinnamon Teal | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Northern Shoveler | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Northern Pintail | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Green-Winged Teal | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Canvasback | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Redhead | X | X | X | X | X | X | X | ||||||
| Ring-necked Duck | X | X | X | X | X | X | X | X | X | X | |||
| Tufted Duck | X | X | |||||||||||
| Greater Scaup | X | X | X | X | X | X | X | X | X | X | X | X | |
| Lesser Scaup | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Common Eider | X | ||||||||||||
| Harlequin Duck | X | X | X | ||||||||||
| Surf Scoter | X | X | X | X | X | X | X | X | X | X | X | X | X |
| White-winged Scoter | X | X | X | X | X | ||||||||
| Black Scoter | X | X | X | X | |||||||||
| Long-Tailed Duck | X | X | |||||||||||
| Bufflehead | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Common Goldeneye | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Common x Barrow's Goldeneye | X | X | |||||||||||
| Barrow's Goldeneye | X | X | X | X | |||||||||
| Hooded Merganser | X | X | X | X | X | X | X | ||||||
| Common Merganser | X | X | X | X | X | X | X | X | X | ||||
| Red-breasted Merganser | X | X | X | X | X | X | X | X | X | ||||
| Ruddy Duck | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Total | 17 | 22 | 22 | 21 | 20 | 25 | 34 | 32 | 37 | 37 | 32 | 35 | 32 |
| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |