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In this series this male tufted duck goes through a pattern of wing-flapping and preening. Wing-flapping in ducks is often part of courtship behaviour, while preening keep feathers clean, parasite-free and well oiled.
A small pond with reeds and plenty of other vegetation.
Duck feathers are water proof. See how water droplets roll off them! Ducks have a special gland called the 'preen gland' near their tail. This tiny gland produces oil which the duck uses to coat its feathers. Ducks pick up the oil with their head and beak and then smears it over their feathers.