Determining the spacing of acoustic call count stations for monitoring a widespread forest owl

Nocturnal species are challenging to monitor, but with advances in bioacoustic technology, acoustic monitoring is becoming a more affordable, efficient technique for monitoring cryptic species. We tested the suitability of acoustic monitoring as a potential national monitoring method for morepork/rūrū (Ninox novaeseelandiae), in beech forest within the Eglinton Valley, Fiordland, during spring 2009–2010.

Diet of moreporks (Ninox novaeseelandiae) in Pureora Forest determined from prey remains in regurgitated pellets

The diet of radio-tagged moreporks (Ninox novaeseelandiae) was studied at Pureora Forest from May to December 1997. An examination of 187 pellets yielded 1226 prey items. Approximately 99% of the diet was invertebrates; the commonest items being beetles (48.6%), stick insects (25.6%) and weta (11.8%). Vertebrate prey included silvereye (Zosterops lateralis) and rodents in small numbers. The diet varied significantly from month to month.