Diet of moreporks (Ninox novaeseelandiae) in Pureora Forest determined from prey remains in regurgitated pellets
نویسندگان
چکیده
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. __________________________________________________________________________________________________________________________________
منابع مشابه
The Fate of Birds and Selected Invertebrates during a 1080 Operation
An aerial 1080 poison operation for possums at Waipoua Forest in spring 1990 applied cereal pellets lured with cinnamon. Numbers of brown kiwi, moreporks, fernbirds, kokako and common diurnal birds were monitored before, during and after the operation, while small numbers of insects and kauri snails were tested for 1080 uptake. Of the birds only blackbird and tomtit showed possible declines aft...
متن کاملFate of Moreporks (ninox Novaeseelandiae) during a Pest Control Operation on Mokoia Island, Lake Rotorua, North Island, New Zealand
We monitored 16 radio-tagged moreporks (Ninox novaeseelandiae) on Mokoia Island after a brodifacoum poison drop to eradicate mice (Mus musculus), normally included in the owls’ diet. All 16 moreporks were alive after 13 days. One bird was found dead on day 22, and corpses of two radio-tagged birds were located on day 51. The bird found on day 22 contained 0.97 mg kg of brodifacoum in its liver....
متن کاملConservation management and diets of powerful owls ( Ninox strenua ) in outer urban Melbourne , Australia
The Powerful Owl Ninox strenua is Australia's largest owl, and is mainly found east of the Great Dividing Range on the mainland in tall-open forests. The species is considered rare, both nationally and in the State of Victoria; and threatened in the Greater Melbourne area. Recovery plans for the future conservation management of N. strenua are being prepared in 2 states. Historically, Powerful ...
متن کاملDiet analysis in piscivorous birds: What can the addition of molecular tools offer?
In trophic studies on piscivorous birds, it is vital to know which kind of dietary sample provides the information of interest and how the prey can be identified reliably and efficiently. Often, noninvasively obtained dietary samples such as regurgitated pellets, feces, and regurgitated fish samples are the preferred source of information. Fish prey has usually been identified via morphological...
متن کاملHabitat associations of small mammals in southern Brazil and use of regurgitated pellets of birds of prey for inventorying a local fauna.
We inventoried terrestrial small mammals in an agricultural area in southern Brazil by using trapping and prey consumed by Barn Owls (Tyto alba) and White-tailed Kites (Elanus leucurus). Small mammals were trapped in three habitat types: corn fields, uncultivated fields ("capoeiras"), and native forest fragments. A total of 1,975 small mammal specimens were trapped, another 2,062 identified fro...
متن کامل