On Sunday I went to the lift bridge in Burlington Ontario to photograph longtail ducks and was treated to a bonanza of merganser ducks. Mergansers usually visit this location in mid to late November and stay for 6 to 8 weeks… and sometimes longer.
The longtails usually outnumber the mergansers by a ratio of about 20 to 1, making it difficult to spot the mergansers. Typically there are only a handful mixed in with the longtails. I was pleasantly surprised that there were several dozen mergansers in the area.