Bird Watching: Rednecks and Ducks, 1 by Grasmussen

Grasmussen wrote:
There was a strong cold wind blowing this evening. I sat on the bank at the lagoon for a long time waiting for something to photograph, and only getting cold. Suddenly, it was as if an aphrodisiac spread across the entire lagoon at once. There was action everywhere.

A mated pair of Bufflehead are attacking two of three male interlopers. The bachelors had just landed. There was a surplus of unattached males, and they moving from one female to the next.