The good news for Bay Bush Action last week was that another milestone had been reached with the trapping of the 10,000th rat by volunteers from just 250ha of the forest behind Paihia. The bad news was that thousands more were still at large.
Bay Bush Action spokesman Brad Windust blamed a long summer and ongoing mild temperatures for causing a plague of rodents, which he said would be having a devastating effect on Northland wildlife in areas where there was no pest control.
"There's always a seasonal bump in catches this time of year, but right now we are trapping what feels like a tsunami coming in, particularly young rats," he said.
The group was now extremely worried by the prospect of localised extinctions, which had happened before.
"Northland has already lost far too much to the mouths of these introduced invasive predators. Our forest parrots the kākā and kākāriki are gone, along with bellbirds and saddleback," Mr Windust said.