Hooded merganser.

Pair of male hooded mergansers seen in the Detroit River at Windsor.

Lophodytes cucullatus
Hooded Mergansers find their prey underwater by sight. They can actually change the refractive properties of their eyes to improve their underwater vision. In addition, they have an extra eyelid, called a “nictitating membrane,” which is transparent and helps protect the eye during swimming, like a pair of goggles.
source - https://www.allaboutbirds.org/…/Hooded_Merganser/lifehistory

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