F/6.3, 1/400, ISO 400.
What did the calculator say to the math student?
You can count on me.
Interesting Fact: On the bird family tree, Hooded Mergansers (genus Lophodytes) lie between goldeneyes (Bucephala) and the other North American mergansers (Mergus). They share many courtship behaviors and calls with both of those groups. ( https://www.allaboutbirds.org/guide/Hooded_Merganser/lifehistory )