Harlequin Duck

Identification: male is small diving duck with small bill, rounded head and distinctive white facial patch
between bill and eyes, other distinctive white patches over blue-gray body which has chesnut colored flank.

Female/Immature are dark chocolate with small bill, circular white spot behind the eye and two white areas between the eye and bill.

Male- Chesapeake Bay Bridge Tunnel, Virginia

 

Immature/female- Glacier National Park, Montana