Did a quick walk out into DeKorte Park Nature Reserve during lunch, near low tide.

Didn't see any Canvasbacks but did see an extra-secretive Pied-billed Grebe (above) and a Lesser Yellowlegs (left).

The Grebe was distant, and hanging out near the rocks along the distant Saw Mill Creek Trail, which is officially closed. 

It tended to hide behind rocks if any humans seemed close, so best to use a spotting scope from the far shore.  

Full list follows.

Richard W. DeKorte Park, Bergen, US-NJ
Jan 20, 2012 12:40 PM – 1:25 PM
Protocol: Traveling
1.0 mile(s)
Comments:     Walked along the Lyndhurst Nature Reserve, checking SMC mudflats and Teal Pool
14 species

Canada Goose  X
Gadwall  X
Mallard  X
Northern Shoveler  X
Northern Pintail  X
Bufflehead  X
Hooded Merganser  X
Common Merganser  X
Pied-billed Grebe  X     In Teal Pool out by Saw Mill Creek Trail T intersection
Greater Yellowlegs  3     Low tide along Saw Mill Mudflats  
Lesser Yellowlegs  1     Low tide along Saw Mill Mudflats…
Ring-billed Gull  X
Great Black-backed Gull  X
White-crowned Sparrow  X