(Puffinus bulleri)
The Buller's shearwater (Ardenna 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 genus Ardenna,it forms a superspecies with the wedge-tailed shearwater (A.pacificus).