I checked North Beach and Highland Beach for ducks yesterday  (11/25/2010)
afternoon. 
 
North Beach:
 
Black Scoter (hundreds)
Surf Scoter (hundreds)
White-winged Scoter (5)
Long-tailed Duck (8)
Common Goldeneye (3)
Greater/Lesser Scaup (50)
Greater Scaup (1)
Common Loon (1)
Bufflehead (hundreds)
Ruddy Duck (1)
Bald Eagle (2)
Sharp-shinned Hawk (1)
Caspian Tern (1)
Herring Gull
 
Highland Beach was pretty quiet:
 
Double-crested Cormorant (x40)
Great Black-backed Gull
Ring-billed Gull
Laughing Gull
Herring Gull
Black Scoter (5)
Bufflehead (10)
 
Good Birding!
Daniel Kraushaar