Southern boobook age. Brushtail possums ("Trichosurus" spp.) and introduced cats and rats raid the nests for nestlings and eggs, and raptors such as the brown goshawk ("Accipiter fasciatus"), grey goshawk ("Accipiter novaehollandiae"), Australian masked owl ("Tyto novaehollandiae"), and probably powerful owl ("Ninox strenua") seize young birds. Juvenile southern boobooks are at greater risk after bushfires and have perished after being tangled up in dodder ("Cassytha") or bidgee-widgee ("Acaena novae-zelandiae"). The southern boobook generally preys on mice, insects, particularly nocturnal beetles and moths, and birds the size of a house sparrow ("Passer domesticus"). A higher proportion of its diet is invertebrates compared with
Australasian pipit New Zealand due to the improvement of pastures, use of pesticides and predation by introduced species. A number of subspecies are recognised: Australasian pipit The Australasian pipit ("Anthus novaeseelandiae") is a fairly small passerine bird of open country in Australia, New Zealand and New Guinea. It belongs to the pipit genus "Anthus" in the family Motacillidae. It was formerly lumped together with the Richard's, African, Mountain and Paddyfield pipits in a single species: Richard's pipit, "Anthus novaeseelandiae". Some authors split the Australasian pipit further into two species: Australian pipit ("Anthus australis") in Australia and New Guinea and New Zealand pipit