Southern boobook north of Perth. There, southern boobook owls are dying after eating rodents that people have killed with second-generation anticoagulant rat poison. Older poisons such as warfarin or coumatetralyl were unlikely to affect owls. Southern boobook The southern boobook ("Ninox boobook") is a species of owl native to mainland Australia, southern New Guinea, the island of Timor, and the Sunda Islands. Described by John Latham in 1801, it was generally considered to be the same species as the morepork of New Zealand until 1999. Its name is derived from its two-tone "boo-book" call. Eleven subspecies of the southern boobook are recognized,
Morepork single species. Examining both morphological and genetic (cytochrome "b") characters, Michael Wink and colleagues concluded that the southern boobook was distinct from the morepork, as was the Tasmanian boobook, which should be raised to species status as "Ninox leucopsis". Four subspecies of "Ninox novaeseelandiae" are recognised by the IOC, two of which are extinct: The morepork is long, with female slightly larger than the male. She is slightly heavier, too, at 170-216 g compared with the male's 140-156 g. The morepork has generally dark brown head and upperparts, with pale brown spots on head and neck and white markings on