Chestnut-breasted shelducks were first recorded from New Zealand in 1973 at Hokitika River. There was an influx during 1982-86, with some birds persisting for several years, especially in Marlborough. They have been recorded regularly if infrequently since 2000. Chestnut-breasted shelduck have reached nearly all of New Zealand's outlying island groups, with records from Raoul Island, Kermadec Islands (1994), Pitt Island, Chatham Islands (1998), Snares Islands (1984), Enderby Island, Auckland Islands (1983-84), and Campbell Island (1984-85). Most records have been of single birds, but occasionally up to three birds. There is one confirmed breeding record, from near Lake Tekapo, where a pair with half-grown young was seen in January 1985. Birds have been seen in most districts of the South and North Islands.