2019 Concert

Date posted: 05-Feb-2019

OrigiNZ, the tartan taonga are returning for the 2019 concert. Click..

Tiri's three unique foghorns

Date posted: 01-Feb-2019

Our next social event will take place on Monday 18th March when Carl Hayson and ..

Young Conservation Superstars win awards!

Date posted: 27-Jan-2019

Gabriel Barbosa and teacher Kate Asher, a team leader who co..

Entries for the 2019 photo competition

Date posted: 19-Jan-2019

We are now taking entries for the 2019 photographic competition. You can enter u..

Hihi volunteer needed

Date posted: 18-Oct-2018

Would you like to volunteer with the Island's hihi team and learn from them how ..

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..

Black Shag

Scientific name:

 Phalacrocorax carbo 

Maori name:

 Kawau

 

 

Conservation status

Naturally uncommon

Mainland status:

Sparsely widespread 

Size:

88 cm, 2.2 kg

Lifespan:

Up to 20 years (record from Europe) 

Breeding:

Timing variable according to area   

Diet:

Fish, crayfish, large invertebrates, molluscs 

Total population:

Estimated at 5,000-10,000 individuals (2012) 

The black shag is widely distributed throughout the world. The sub-species that breeds in New Zealand (novaehollandiae) is also found throughout Australia and New Guinea. 

It is our largest shag, and is sparsely distributed throughout the country. Black shags feed on small-medium fish in both fresh and marine water; they also eat crustaceans and molluscs. Because of their preference for fish, they have in the past been persecuted by fishermen, though this happens less often nowadays.

They breed in colonies, usually in trees overhanging or close to water, inland or at the coast. They build a large nest of twigs and lay 2-5 eggs, usually three, in autumn or winter, though timing is highly variable; they have been found nesting at all times of the year. Incubation lasts 27-31 days and chicks fledge at around seven weeks old. Most start to breed when they are three years old.

Black shags can turn up anywhere around the coast or on inland waters and are seen occasionally in the vicinity of Tiritiri Matangi, though they do not breed on the Island.

Find out more about the black shag at New Zealand Birds Online.

Photograph by Simon Fordham ©

Reference: Heather, B and Robertson, H. The Field Guide to the Birds of New Zealand, Viking 2005.