Merganser

At Lunch: sat awhile at Sandpiper Beach...friend happened along, and I tried to id Birds and Bird's calls...Song Sparrow, Wood PeeWee, Sandpiper, Robin, Little Birds, Grosbeak, and Merganser came along...I went to the Merced's Edge by the Willow, and tried for steady clip...but not much luck!...overcast, warm...Male Merganser came by furiously flying upriver...oh...report of Owls...