RING-NECKED DUCK
(Aythya collaris)
BLACK BACK GRAY WING STRIPE ♂ DISTINCT CREST CONSPICUOUS BILL RING CHESTNUT COLLAR BLACK BREAST WHITE PATCH ♀ WHITE EYE RING LIGHT PATCH
CANVASBACK
(Aythya valisineria)
WHITE BACK GRAY WING STRIPE ♂ CHESTNUT HEAD LONG SLOPING PROFILE, BLACK BILL BLACK BREAST ♀ GRAY BACK BROWN BREAST
GREATER SCAUP
(Aythya marila)
DARK RUMP WHITE WING STRIPE EXTENDING INTO PRIMARIES WHITE BELLY NAIL OF BILL 7.0-9.0 MILLIMETERS WIDE ♂ GRAY BACK BLACK HEAD WITH GREENISH TINGE BROAD BLUE BILL BLACK BREAST WHITE FLANKS ♀ BROWN BODY AND HEAD DISTINCT WHITE MASK