blue-billed duck - oxyura australis - small australian stiff-tailed duck, with both the male and female growing to a length of 40

animal australia australian australias australis background beak bill billed bird birding birdwatching black blue colour dark down duck endemic forest green island lake male monger natural nature new north ornithologist ornithology oxyura perth primeval rare singer singing small south stiff tailed under water western wetlands white wild wildlife