The Southern Boobook is the smallest and most common owl in Australia. It is identified by its plumage, which is dark chocolate-brown above and rufous-brown below, heavily streaked and spotted with white. The bill is grey with a darker tip, and the feet are grey or yellow. The facial disc is chocolate brown and the eyes are large and yellowish. Young Southern Boobooks are almost entirely buff-white below, with conspicuous dark brown facial discs. Like other owl species, the Southern Boobook is nocturnal. Birds are often observed perched on an open branch or tree-top. It is also known as the 'Mopoke'.