Field Guide to the Birds of New ZealandBarrie Heather, Hugh Robertson, Derek Onley · First published 2015Open the Tome
Albatrosses Petrels and Shearwaters of the World Helm Field GuidesDerek Onley · First published 2007Open the Tome
Albatrosses, Petrels and Shearwaters of the WorldDerek Onley, Paul Scofield · First published 2007Open the Tome
