In New Zealand its range on the east coast extends as far south as Christchurch, though this is a recent extension—older books report it no further south than Kaikoura. The range extensions have accompanied population recovery from heavy persecution in the early 1900s and likely represents recolonization of the former range. The pied cormorant is listed as Nationally Vulnerable in New Zealand. The population has been growing from around 700 breeding pairs in the 1950s to an estimated 3,000 pairs post 2000 (Refer to population trend data).