Friday, October 18, 2019

Kiore ( Rattus exulans ) predation on the eggs of the Little Shearwater ( Puffinus assimilis haurakiensis )

TitleKiore ( Rattus exulans ) predation on the eggs of the Little Shearwater ( Puffinus assimilis haurakiensis )
Publication TypeJournal Article
Year of Publication1996
AuthorsBooth, AM, Minot, EO, Fordham, RA, Innes, JG
JournalNotornis
Volume43
Issue3
Pagination147-153
Type of Articlepaper
Keywordsegg predation, Puffinus assimilis, Rattus exulans, shearwater
Abstract

Evidence of predation by kiore (Rattus exulans) on Little Shearwater (Puffinus assimilis haurakiensis) eggs was obtained on Lady Alice Island, Hen and Chickens Group, during the 1994 breeding season. A time-lapse video camera filmed a kiore removing a Little Shearwater egg from a nesting chamber. This egg was later recovered, showing signs of damage typical of rat predation. A kiore was also filmed breaking open and eating a punctured hen egg that had been placed in a shearwater burrow. Sixteen (55%) of the 29 nests monitored failed during incubation, and predation by kiore was the probable cause of failure for up to 75% of these nests.

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