Arctic Skua

Stercorarius parasiticus is an Arctic-breeding skua regularly seen around New Zealand coasts in summer. It differs from pomarine skua through its slimmer shape and pointed rather than spoon-shaped central tail feathers. Adults occur in pale and dark forms, both with white primary flashes. Breeding birds have elongated pointed central tail feathers.

It migrates from Arctic nesting grounds to Southern Hemisphere seas, including New Zealand waters. Coastal channels and areas with feeding terns attract birds. It chases terns and gulls to force them to release fish. It also catches fish and invertebrates directly.

The New Zealand classification is Migrant. Cook Strait ferries, Kaikōura pelagic trips and Hauraki Gulf cruises offer summer sightings.