Five species of great albatrosses breed in New Zealand, mainly on offshore islands such as Antipodes and Chatham islands. Only two species (wandering and royal albatrosses) used to be recognised. These two species were grouped in the forms used by observers until 2007 to record bird counts around fishing vessels. The accepted taxonomy in New Zealand has since changed, and the forms now in use separate counts of the different albatrosses. However, within each species complex, species can be difficult to distinguish from each other at sea, and some misidentifications may occur.