Wood duck is probably the most stunningly colorful waterfowl in the world. The male bird has a metallic, purplish-green head and crest. Their belly is white and chest is dark-red. Along the neck, they have attractive, narrow white stripes. Their wings are patterned blue and black.
Female wood ducks are not so colorful as males. They have grey-brown head, white belly and white speckled breast. Male bird uses their colorful plumage to attract female bird during breeding season.
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From @mohiuddinmukul