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
Anatomical terms of bone or Superior pubic ramus. Ramus may also be used to refer to nerves, such as the ramus communicans. A "facet" refers to a small, flattened articular surface. A "line" refers to a long, thin projection, often with a rough surface. "Ridge" and "crest" refer to a long, narrow line. Unlike many words used to describe anatomical terms, the word "ridge" is derived from Old English. A "spine", as well as referring to the spinal cord, may be used to describe a relatively long, thin projection or bump. These terms are used to describe bony protuberances in specific parts of the