Marine. During breeding usually occurs in off-shore waters. Non-breeding distribution largely pelagic. Breeds on thick forest high on limestone cliffs.
"Birds return to colony from mid-Feb to late Mar...Laying starting about 12 May, peaking about 23 May." (HANZAB,1,p.570)
At close of breeding season,birds migrate east of New Zealand into Central Pacific, some reaching south America. Young birds may spend up to 10 years in the zone of Humboldt Current. Small numbers cross Tasman Sea to eastern Australia; perhaps mainly young birds.