Knob-billed Duck - <p>Knob-billed Duck <i>Sarkidiornis melanotos</i> (earlier known as Comb Duck) or in Hindi as Nukta, is a resident of wetlands, marshes and water bodies in most parts of India. The knob on the bill of the male becomes very prominent during breeding season. seen in Sonkhaliya near Nasirabad, Rajasthan </p> © Koshy Koshy - CC BY 2.0 - Wikimedia Commons
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