within months of their arrival, and in February 2008 twenty more were translocated. From a high of 87 individuals, the population was reduced to just 10 from the effects of a single brown rat.

Birds had also been translocated since 2000 to Waikawa (Portland Island), a privately owned island off the Mahia Peninsula in Hawke's Bay. In 2012, the population on Waikawa was discovered to have crashed by 75%