Leading ANS field trip this a.m. to Piscataway Bay, Accokeek Creek, we found pair of White-Winged Scoters  - seen from the boardwalk, across from Mt. Vernon. 

Also good concentrations  of

Common Merganser
Gadwall
American Wigeon
Ring-necked Duck
Lesser Scaup
Bufflehead
Mallard
    Plus
Redhead  (6-8)
Hooded Merganser  
Ruddy Duck

Plus - Wharf Road (Farmington Landing)
  Common Loon  (6)
  Tundra Swan  (30)
   ]
Carol Ghebelian
Indian Head, MD  20640