The blue-billed duck (Oxyura australis) is a small Australian stiff-tailed duck, with both the male and female growing to a length of 40 cm (16 in).

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Keywords: animal, animals, australia, australian, australis, ave, aves, billed, bird, birds, blue, blue-billed, duck, ducks, endemic, horizontal, omnivore, omnivores, omnivorous, oxyura, stiff, stiff-tailed, tailed, threatened, water, wetland, wetlands, wildlife