Rats rule Ulva Island, and DOC says efforts to stamp out the pest since February have failed.
The island is a sanctuary for native birds and achieved predator-free status in 1997.
Located just 800 m off Rakiura/Stewart Island, Ulva is within swimming distance for rats - and until now, incursions of the pest have been successfully thwarted.
In February, though, a dead Norway rat was found in a trap on Ulva, and in June a spokesperson for DOC said the department would consult with the Raki ura community over plans to handle this situation.
By early July, the consultation process was yet to begin.
Ulva Goodwillie, who operates walking tours on the island, believes the rats should never have been allowed to get out of control.
“The last big incursion…
