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,
Southern boobook southern boobook is a mainly nocturnal species, though may be active at dawn and dusk. It is heard much more commonly than seen, being particularly vocal in breeding season. The characteristic two-note "boo-book" call or hoot can be heard up to away, the second note generally lower in pitch than the first. Calling takes place from sunset through till dawn, generally with a peak in the two hours after dusk and just before dawn. It can continue for several hours. The male's hooting is higher pitched and of shorter duration, and is heard much more commonly than that of the