Rat Eradication - Campbell Island — File 200268

https://en.m.wikipedia.org/wiki/Campbell_Island,_New_Zealand "In 1954, the island was gazetted as a nature reserve. Feral Campbell Island cattle were eliminated by about 1984 and feral Campbell Island sheep were culled during the 1970s and 1980s, with their eventual extermination in 1992. In 2001, brown rats (Norway rats) were eradicated from the island nearly 200 years after their introduction. This was the world’s largest rat eradication programme. The island’s rat-free status was confirmed in 2003.[6] Since the eradication, vegetation and invertebrates have been recovering, seabirds have been returning and the Campbell teal, the world’s rarest duck, has been reintroduced.[12] Other native landbirds include the New Zealand pipit and the Campbell snipe, a race or species of the Coenocorypha snipes discovered only in 1997. The snipe had survived on Jacquemart Island and began recolonising the main island after the rats had been removed."