 However, the first detailed account of such an achievement is by David Fleay, who bred them at the Healesville Sanctuary in Victoria in 1946.These owls hunt at night, preying on a wide range of animals, from insects to mammals as large as rabbits, bandicoots and brushtail possums.Their main diet includes introduced rodents and rabbits in agricultural areas, and marsupials and native birds in less disturbed habitats.