[1][2] Central Otago is an area of New Zealand where rabbits are a non-native, invasive, serious problem with no natural predators, and land owners have a legal obligation to control them.
[3] In 2016, "the Otago Regional Council budget[ed] 2200 hours a year for biosecurity officers to police this, and in 2013, one landowner was taken to court over excessive rabbits.
They've held the title of the region's worst pest since the middle of the 19th century, maintaining it in the face of helicopter hunters, poison-laced carrots, aerial 1080 drops, rabbit-proof fences and biological warfare, in the form of a virus smuggled into the country by farmers in 1997.
"[4] Additional misguided attempts at controlling the rabbits included releasing ferrets in 1879 even after warnings were made of their effects on bird life.
"[4] Teams generally hunt individually on foot during the day, and from vehicles in groups at night when the rabbits are more plentiful.