- Rounded head. The Lesser Scaup has a corner at the rear of the head, while the Greater Scaup has a more rounded head.
- Prominent black nail on bill. This can be seen in the first photo.
Thursday, September 22, 2016
GREATER SCAUP, TOLLGATE POND, HAMILTON, ON
We can ID these ducks as Greater Scaups, rather than Lesser Scaups as follows: