Buller's shearwater  (Puffinus bulleri)

Buller's shearwater has been described as flying with a grace and economy like no other, characterised by longer gliding motions and less wing flapping, each bird arcing and tilting seemingly without effort (3) (4). In flight, a dark bar on the pale grey wings and lower back forms an unmistakable and arresting ‘M'-shaped pattern from above (3) (4), easily distinguishing this shearwater from any other (2). Upperparts are otherwise brownish-grey, while underparts are white (2). The grey, wedge-shaped tail is broadly tipped in black, the long, slender bill is bluish grey with a darker tip, and the legs and feet are pink (5) (6).