It looks like a duck.

Source: Tatoeba

In a sunny spot stood a pleasant old farm-house close by a deep river, and from the house down to the water side grew great burdock leaves, so high, that under the tallest of them a little child could stand upright. The spot was as wild as the centre of a thick wood. In this snug retreat sat a duck on her nest, watching for her young brood to hatch; she was beginning to get tired of her task, for the little ones were a long time coming out of their shells, and she seldom had any visitors.

Source: Tatoeba

How do ducks call?

Source: Tatoeba

The duck ate pineapple.

Source: Tatoeba

Commentators have variously described the sound of vuvuzelas as "annoying" and "satanic" and compared it with "a stampede of noisy elephants", "a deafening swarm of locusts", "a goat on the way to slaughter", "a giant hive full of very angry bees", and "a duck on speed".

Source: Tatoeba

He has the walk of a duck.

He has the gait of a duck.

He walks like a duck.

Source: Tatoeba