U.S. Fish & Wildlife Service

U.S. Fish & Wildlife Service

Division of  Migratory Bird Management

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Mid-Winter Waterfowl Survey
4-letter species codes

Code  Species
ABDU            
AGWT           
AMWI           
BCTE              
BRAN            
BUFF             
CAGO           
CANV           
EIDE              
GADW          
GOLD           
GWFG          
HARD           
LTDU             
MALL           
MEDU            
MERG           
MODU          
MUSW          
NOPI            
NSHO           
REDH            
RNDU           
ROGO           
RUDU            
SCAU            
SCOT            
SGBL             
SNGO           
SWAN
TRUS
TUSW
UDUC
WHDU
WODU

American black duck
Green-winged teal
American wigeon
Blue-winged and cinnamon teal (not speciated)
Brant
Bufflehead
Canada goose
Canvasback
Eider (not speciated)
Gadwall
Goldeneye (not speciated)
Greater white-fronted goose
Harlequin duck
Long-tailed duck
Mallard
Mexican duck
Merganser (not speciated)
Mottled duck
Mute swan
Northern pintail
Northern shoveler
Redhead
Ring-necked duck
Ross' goose
Ruddy duck
Scaup (not speciated)
Scoters
Snow goose, Blue phase
Snow geese (not differentiated by color phase))
Unidentified swan
Trumpeter swan
Tundra swan
Unidentified duck
Whistling duck
Wood duck

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