BTO Bird ID - Goosander and Red-breasted Merganser

Identifying the two large sawbills, Goosander and Red-breasted Merganser, can be pretty straight-forward when confronted with male birds. However, the females, or redheads as they are more often called, can be much more difficult. This, the latest ID film gives useful pointers on how to confidently tell them apart.
Author(s): 
BTO
Free: 
Yes
Available as: 
Online
Keywords: 
film, seabirds, waterbirds