Austral Pygmy-Owls nest in cavities, usually in a hole in a tree, but they also use holes in the ground, such as in a bank (Johnson 1967). Egg laying is from September-November. The clutch is 3-5 white eggs, with mean dimensions of 29.8 ± 0.13 x 25.3 ± 0.12 mm (Johnson 1967). Incubation, by female alone, is initiated when the last egg is laid and lasts ca 26-28 days (Marks et al. 1999, König and Weick 2008).