More plaudits for Tiritiri Matangi

Date posted: 15-Jul-2019

Recognition of the wonderful experience visitors have when visiting the Island h..

Results of the 2019 Photo Competition

Date posted: 15-Jul-2019

The results of this year's competition have now been decided. Click here (/2019-photo-co..

Lighthouse Open Day

Date posted: 30-Apr-2019

Our historic lighthouse, signal station and diaphonic foghorn will all be on dis..

We need a new Treasurer

Date posted: 08-Apr-2019

The Supporters need a new treasurer to take over in September when Kevin Vaughan..

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..

Grey Warbler

Scientific name:

 Gerygone igata

Maori Name:

 riroriro

 

 

Conservation status

 Endemic. Not threatened

Mainland status:

 Widespread and common

Size:

 10cm, 6.5g

Lifespan:

 5+ years

Breeding:

 August – January

Diet:

 Mainly invertebrates

Grey warbler - photographer: Simon FordhamThis tiny bird is grey-brown above and pale grey on the face, throat and breast and has an off-white belly and undertail. The darker tail is tipped white and the eye is red. The song is a distinctive long musical wavering trill.

The diet is mainly invertebrates. Spiders, caterpillars, flies, beetles and bugs are often taken by the bird hovering to pick them from plants. A few small fruits are also eaten.

Breeding takes place between August and January and pairs stay together year after year. The female takes up to 27 days to build the distinctive domed hanging nest with a small side entrance hole. It is made of rootlets, moss, lichen, leaves, bark, tree-fern scales and fibres, twigs, cobwebs, spider egg-cases, wool, hair and feathers, and is lined with a thick layer of feathers, downy seeds and tree-fern scales. The clutch of 2–5 white eggs with reddish-brown speckling is incubated by the female for 17–21 days. Both parents feed the chicks for the 15–19 day fledging period and for up to 35 days after the chicks leave the nest. The male does most of the later care of the first brood as the female prepares to lay a second clutch.

Grey warbler - photographer: Max McRae
The grey warbler is the usual host to the shining cuckoo and they have been seen feeding shining cuckoo chicks on Tiri. 

This bird is one of the few native passerines to have adapted to human modification of the landscape and is common in many forest, scrub, rural and city habitats.

Find out more about the grey warbler at New Zealand Birds Online.





Photography by: Simon Fordham
© (left) and Max McRae © (right)

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.