[EBB Sightings] Northern Pintail x Mallard at Shadow Cliffs, Pleasanton

Hi all,

This morning, among the more usual were the following ducks at Shadow 
Cliffs Regional Recreation Area in Pleasanton:

Northern Pintail x Mallard hybrid (?) (one male)
Canvasback (one male)
Ring-necked Duck (several males + one female)
Hooded Merganser (a male + female pair)

A snap shot of the hybrid duck (in poor lighting) is here if anyone is 
interested:
 http://home.earthlink.net/~akira_s/Temp/HybridDuck1.htm

They were all in the creek in the back of park, not in the main lake.

Good birding,
Akira
Alameda County
Pleasanton, CA