Michael Rosengarten:
Hooded Merganser (Lophodytes cucullatus)
Michael Rosengarten:
Canvasback (Aythya valisineria)
Michael Rosengarten:
Yellow-bellied Sapsucker (Sphyrapicus varius)
Michael Rosengarten:
Ring-necked Duck (Aythya collaris)
Michael Rosengarten:
Ring-necked Duck (Aythya collaris)
Michael Rosengarten:
Common Goldeneye (Bucephala clangula)
Michael Rosengarten:
Common Goldeneye (Bucephala clangula)
Michael Rosengarten:
Norristown Dam
Michael Rosengarten:
Norristown Dam
Michael Rosengarten:
Bufflehead (Bucephala abeola)
Michael Rosengarten:
Bufflehead (Bucephala abeola)
Michael Rosengarten:
Bufflehead (Bucephala aalbeola)
Michael Rosengarten:
Common Goldeneye (Bucephala clangula)
Michael Rosengarten:
Common Goldeneye (Bucephala clangula)
Michael Rosengarten:
Ruddy Duck (Oxyura jamaicensis)
Michael Rosengarten:
Greater Scaup, Long-tailed and Bufflehead
Michael Rosengarten:
Greater Scaup (Aythya marila)
Michael Rosengarten:
Greater Scaup, Bufflehead, and Long-tailed
Michael Rosengarten:
Redhead (Aythya americana)
Michael Rosengarten:
Redhead (Aythya americana)
Michael Rosengarten:
Redhead, Greter Scaup, Bufflehead and Long-railed Ducks
Michael Rosengarten:
Redhead, Greater Scaup, Bufflehead and Long-tailed ducks
Michael Rosengarten:
Redhead (Aythya americana)
Michael Rosengarten:
Redhead (Aythya americana)
Michael Rosengarten:
Redhead, Long-tailed and Buffleheads
Michael Rosengarten:
Greter Scaup, Bufflehead and Long-tailed ducks
Michael Rosengarten:
Redhead (Aythya americana)
Michael Rosengarten:
Redhead (Aythya americana)
Michael Rosengarten:
Greater Scaup (Aythya marila)
Michael Rosengarten:
Greter Scaup (Aythya marila)
