Breeding.<\/em><\/strong>\u00a0 Breeds colonially from September to April, nesting in burrows on islands at opposite ends of New Zealand.\u00a0 The vast majority of the world\u2019s population (approximately 300,000 pairs) nests on Little Barrier Island, northeast of North Island, across the Hauraki Gulf, plus a few pairs on neighboring Great Barrier Island.<\/p>

At the southern end of New Zealand, approximately 5,000 pairs nest on Codfish Island west of Stewart Island.\u00a0 The southern population is recovering from near-extirpation, having dwindled to approximately 50 pairs in the 1980s.<\/p>

Formerly nested on mountains in the interiors of both North and South Island, but it was extirpated from these areas by mammalian predators such as rats that accompanied the European colonists.<\/p>

During the breeding season, forages widely across the Tasman Sea and adjacent southwestern Pacific.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t