Tuatara: Volume 21, Issues 1 and 2 (New Zealand Albatrosses and Petrels: an Identification Guide)
Fig. 10: Head study of a Westland Black Petrel (Procellaria westiandica). Note the powerful beak, typical of the Procellaria Petrels. — — Photo: P. C. Harper
Fig. 10: Head study of a Westland Black Petrel (Procellaria westiandica). Note the powerful beak, typical of the Procellaria Petrels.
— Photo: P. C. Harper