Geographical range of Buller's shearwater.
BirdLife International. 2016. Ardenna bulleri. The IUCN Red List of Threatened Species 2016: e.T22698182A93667529. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22698182A93667529.en. Downloaded on 26 June 2018.
Cephas