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

KŌKAKO 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..

North Island Fernbird

Scientific name:

 Bowdleria punctata vealeae

Maori Name:

 Mātātā

 

 

Conservation status:

 At risk - declining

Mainland status:

 Limited in range but locally common

Size:

 18cm, 35g

Lifespan:

 Oldest recorded 6.5 yrs

Breeding:

 August – March

Diet:

 Mainly invertebrates

First introduced to Tiri:

 2001

Population on Tiri:

 Possibly several hundred (2013)

Total population:

 Fairly plentiful in north and central North Island where habitat is suitable (swampland and scrubland)

Fernbird - photographer: Simon FordhamThe fernbird is a warbler. It is a warm brown shade above, with a paler shade below which is heavily streaked and spotted with dark brown. The forehead and crown are a chestnut brown with a white eye stripe. It has a distinctive long frayed tail which is drooped during flight. Both sexes, adults and juveniles look alike.

Fernbirds are extremely secretive and often remain hidden in thick vegetation, creeping around like a mouse when they do venture out. They prefer not to fly but, when forced to, their flight is weak and noisy and low to the ground. They prey mainly on spiders, caterpillars, flies, moths and beetles. On islands they have been seen eating maggots and flies around dead penguins.

Most fernbirds stay in pairs or small groups all year and don't tend to stray far from their breeding site. They can lay 2-3 clutches per year and both parents take turns incubating the eggs and feeding the chicks.

The main call of the fernbird is a double call which consists of a low and a sharp metallic note, 'uu-tick', either by the male on his own or in duet with his mate, who only responds with the 'tick' part of the call. A variety of other calls consist of 'tchip', 'tcheong' and 'zrup' notes. Like many warblers, the fernbird can warble melodically, though this is rarely heard.

Fernbirds (13) were first released on Tiritiri Matangi in June/July 2001 as part of a 'rescue mission' when a new section of the Northern Motorway was due to cross their territory. Another six birds were translocated in May 2002, from the same site as the first 13. More would have been moved if extreme weather had not intervened.  Already in 2002, an unbanded bird was seen on the Island, giving proof that they were breeding.

Although they remain secretive in nature, they are being seen and heard increasingly in all parts of the Island and in all habitats, even mature bush. The populations is difficult to estimate but it could be up to several hundred.

Learn more about the fernbird at New Zealand Birds Online

Photography by Simon Fordham ©

References: Heather, B.D.; Robertson, H.A. 2000 The Field Guide to the Birds of New Zealand. Auckland, Viking. Rimmer, A. 2004, Tiritiri Matangi: A model of conservation, Random House. OSNZ 2010, Checklist of the birds of New Zealand, Fourth Edition, Te Papa Press.