Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Buller's Shearwater ("Puffinus" bulleri) is a Pacific species of seabird in the family Procellariidae; it is also known as the Grey-backed Shearwater or New Zealand Shearwater. A member of the black-billed wedge-tailed Thyellodroma group, among the larger shearwaters of the proposed genus Ardenna, it forms a superspecies with the Wedge-tailed Shearwater ("P." pacificus).Adults birds are 46-47 cm in length, with a 97-99 cm wingspan, and have been recorded to weigh 342-425 g. The upperside of Buller's Shearwater is bluish grey. A blackish stripe runs from the tertiary remiges to the primary wing coverts. The primary remiges are blackish also; the two black areas do not meet at the hand however; the area between them is a rather light gray, under bright light it may appear almost white.

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