Seabirds around fishing vessels

Buller's shearwater

Puffinus bulleri

Endemic to New Zealand, the Buller's shearwater breeds almost exclusively on Poor Knights Islands. The annual breeding population is estimated at 200,000 pairs. It could be confused with the fluttering or Hutton's shearwaters. However, the plumage is more strongly contrasted than in these species. Misidentifications by observers are expected to be uncommon.

Puffinus bulleri
CC-BY, Dragonfly Science

Mean number of Buller's shearwater recorded around fishing vessels during counts carried out by government observers, binned to 0.4 degree of longitude and latitude. The size of the circle indicates the number of observations, whereas the colour indicates the mean number of birds recorded during counts. Empty circles indicate that no birds were observed. The grey areas indicate water depths of less than 1000 m.

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