BLACK AND WHITE BACK DARK BACK WHITE WING PATCHES WHITE BELLY ♂ BLACK WITH IRIDESCENT GREEN AND PURPLE DISTINCT WHITE PATCH BLUE-GRAY BILL ♀ DARK GRAYISH BROWN DISTINCT WHITE PATCH
WHITE-WINGED SCOTER
(Melanitta deglandi)
BLACK CHUNKY BODY WHITE PATCH ♂ WHITE EYE PATCH PROMINENT BLACK KNOB REDDISH ORANGE IMMATURE HAS DISTINCT WHITE PATCHES ♀ FEATHERING EXTENDS ALMOST TO NOSTRIL ADULT FEMALE CHEEK PATCHES RANGE FROM SLIGHTLY DARKER THAN IMMATURE TO NO WHITE AT ALL
FULVOUS TREE DUCK
(Dendrocygna bicolor helva)
LONG NECK ADULT WHITE LINE IMMATURE ADULT LONG LEGS
BLACK-BELLIED TREE DUCK
(Dendrocygna autumnalis autumnalis)
WHITE UPPER WING ADULT LONG NECK IMMATURE WHITE WING PATCH