30th Birthday Dinner

Date posted: 06-Sep-2018

Please join us in celebrating the 30th anniversary of the formation of the Suppo..

2019 Calendars now available

Date posted: 05-Sep-2018

The new 2019 calendars are now available and this year's is better than ever! Th..

Winners of kokako photo competition

Date posted: 02-Sep-2018

The stunning winning photographs from those submitted to the competition as part..

Kokako Celebration

Date posted: 21-Jul-2018

(https://www.eventbrite.com/e/the-great-kokako-story-celebrating-21-years-..

Kokako Photographic Competition

Date posted: 20-Jul-2018

KĊŒKAKO PHOTOGRAPHIC COMPETITION Celebrating 21 years on Tiritiri Matangi To ce..

New monitoring reports published

Date posted: 19-Jul-2018

Reports on monitoring studies carried out over the past year have now been poste..

2018 Concert coming up soon

Date posted: 15-Feb-2018

Our 2018 concert will feature an afternoon of light classics and jazz courtesy of the Auckland Ph..

Wetapunga talk coming soon

Date posted: 05-Feb-2018

For the Social on 19 March the speaker will be Ben Goodwin of Auckland Zoo, who will talk about t..

Rat caught and now takahe released from pens

Date posted: 28-Jan-2018

Thankfully DOC staff Andre de Graaf and Polly Hall and their assistants have trapped the rat whic..

Your Christmas Shopping for a Song

Date posted: 04-Dec-2017

Aka - The Grand Christmas Shopping Expedition to Tiritiri Matangi Island Shop Dreading..

Common Diving Petrel

Scientific name:

 Pelecanoides urinatrix urinatrix

Maori Name:

 Kuaka

 

 

Conservation status

 At risk - Relict population

Mainland status:

 NZ coastal waters

Size:

 20cm, 130g

Lifespan:

 Unknown

Breeding:

 August – February

Diet:

 Small krill and copepods

The Common Diving Petrel has black upperparts and white underparts. The sides of the face, neck and throat are mottled grey and the underwings are smoky grey. The stubby bill is black and the legs and feet are blue. They only call at their breeding colonies and the main calls are a harsh ‘kuaka-did-a-did’ and ‘kuaka’ given by the females only and ‘kooo-ah’ which is only given by the male.

They feed mainly on small krill and copepods.

Breeding occurs in large colonies on many off shore islands from Northland to Stewart Island, The Snares, Antipodes and Auckland Island. In northern New Zealand breeding starts in August and from late September in the subantarctic. The birds return to prepare their burrows from March until the end of May. The single white egg hatches after about 53 days and fledges at 45–59 days old in late November–December in northern New Zealand and in January–February in the subantarctic.

With the spread of introduced predators these birds survive best on islands without mammalian predators. There is a thriving colony of diving petrels on Wooded Island, just off the NE coast of Tiritiri Matangi. This colony was the source for birds that were translocated to Motuora Island from 2008 to 2010. They are also common on Tiritiri Matangi itself and their calls can be heard, during the breeding season, in many parts of the Island, especially on the east coast.

Learn more about the common diving petrel at New Zealand Birds Online.

Photo: Common diving petrel chick, Motuora Island, Kay Milton © 2009.

References: Heather, B.D.; Robertson, H.A. 2000 The Field Guide to the Birds of New Zealand. Auckland, Viking. Moon, G. The Reed Field Guide to New Zealand Birds.