Breeding mainly on subtropical islands in the Pacific and on Round Island,
the sole breeding station in the Indian Ocean, this species occurs in pale, dark and intermediate morphs,
of which the centre photo is usually the most common. In common with many of the genus, does not normally
approach ships, although the diagnostic skua-like flashes on the upperwing are visible at some range. The flashes are thought to be
a sort of mimicry, aiding stealing of catches from other seabirds.
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HOMEPAGE
