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,
Norfolk boobook km²) Mt Pitt section of the Norfolk Island National Park. Boobooks breed in tree hollows. Recorded clutch sizes from Norfolk Island range from one to three eggs, with two being usual. Boobooks feed on small vertebrates, especially birds and mammals, as well as invertebrates. The population of the Norfolk boobook declined with the clearance and modification of its forest habitat, especially the felling of large trees with suitable hollows for nesting in. There was also competition for nest hollows with feral honey bees and introduced crimson rosellas. By 1986 the population had been reduced to a single female bird, named