MALE GREATER SCAUP VS MALE LESSER SCAUP, GRATWICK WATERFRONT PARK, NORTH TONAWANDA, NEW YORK, 3/21/2026

   The first photo shows both a male Greater Scaup (on left) and a male Lesser Scaup (on right).  The male Greater Scaup is larger and has a rounded head.  The male Lesser Scaup is smaller and has a peaked head.  The second photo shows a male and female Greater Scaup.  The third photo shows a male Lesser Scaup.

 

GREATER SCAUP ON LEFT, LESSER SCAUP ON RIGHT

MALE GREATER SCAUP (RIGHT) & FEMALE GREATER SCAUP (LEFT)

MALE LESSER SCAUP