Rondeau Ric

A male lesser scaup with a clump of zebra muscles is playing keep away with a male redhead duck who appears to be trying to steal his lunch. Lasalle Park Marina, Burlington, Feb 5, 2018 Aythya affinis Lesser Scaup is the most abundant diving duck in North America, with a global breeding population estimated at 3.8 million. source -  https://www.allaboutbirds.org/guide/Lesser_Scaup/

A female lesser scaup doing a wing flap/stretch/water shake. Aythya affinis Lesser Scaup chicks are capable of diving under water on their hatching day, but they are too buoyant to stay under for more than just a moment. By the time they are 5 to 7 weeks old they are able to dive for 2-25 seconds and swim underwater for 15-18 meters (50-60 ft).

Not sure why her tongue is sticking out but it reminded me of Daffy Duck. This is a female lesser scaup in breeding plumage seen at Erieau Ontario a few days ago. Aythya affinis Lesser Scaup chicks are capable of diving under water on their hatching day, but they are too buoyant to stay under for more than just a moment. By the time they are 5 to 7 weeks old they are able to dive for 2-25 seconds and swim underwater for 15-18 meters (50-60 ft).

Probably. Had a hard time deciding if this was a lesser or greater scaup. Lesser have a slight bump or peak on back of head. The greater has a more rounded head. While this one looks rounded other photos of the birds showed the more characteristics of a lesser. For me the definitive id is the white on the underside of the wing, the lessers white stops halfway to the wing tip and the greater goes almost to the tip. They weren't flying so I couldn't tell. You birders out there should feel free to add your thoughts. Aythya affinis Lesser Scaup chicks are capable of diving underwater on their hatching day, but they are too buoyant to stay under for more than just a moment. By the time they are 5 to 7 weeks old they are able to dive for 2-25 seconds and swim underwater for 15-18 meters (50-60 ft).