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VU Stitchbird  Notiomystis cincta

2010 IUCN Red List Category (as evaluated by BirdLife International - the official Red List Authority for birds for IUCN): Vulnerable

Justification This species is classified as Vulnerable because it has a very small range and population. Intensive conservation efforts aim to improve its status, but the long-term survival of the four remaining translocated populations is uncertain in the long term with all requiring intensive and ongoing management.

Family/Sub-family Meliphagidae

Species name author (Du Bus & Gisignies, 1839)

Taxonomic source(s) Sibley and Monroe (1990, 1993), Turbott (1990)

Taxonomic note Driskell et al. (2007) suggest that this species is taxonomically distinct from the Meliphagidae and should be placed in a new family of its own which takes the name Notiomystidae, more closely related to the Callaeidae (New Zealand wattlebirds).

Identification 18 cm. Small, sexually dimorphic passerine. Male, distinctive velvet-black head, back, upper breast. White erectile ear-tufts. Black underlined on breast with golden-yellow. Black wings with golden-yellow shoulder patches, white wing-bars. Remainder of underparts pale brown. Female, grey-brown with white wing-bar. Small non-distinctive ear-tufts of same grey-brown. Voice Male, loud explosive whistle see-si-ip, low warbling song of up to three minutes. Alarm calls stitch, whee whee whee.

Population estimate

Population trend

Range estimate (breeding/resident)

Country endemic?

500 - 2,000

stable

60 km2

Yes


Range & population Notiomystis cincta was once widespread over the North Island and adjacent offshore islands of New Zealand. Little Barrier Island (31 km2) is now the last natural population, thought to number 4,000-5,000 birds, but recently revised to 500-2,000 birds. Translocated populations of c.100 birds exist on Kapiti (20 km2), and c.150 birds on Tiritiri Matangi (2 km2) Island, but are not yet self-sustaining and only increasing as a result of intensive and ongoing management6. In 2005 sixty birds were translocated to Karori Wildlife Sanctuary on the main North Island (current population estimated at 37 in October 2006) and sixty birds were translocated to Cascade Kauri Park in the Waitakere Ranges near Auckland in 2007. All translocated populations rely on supplementary feeding and in the case of the mainland population, intensive predator control.

Ecology: It is found in most forest-types, but requires mature forest for breeding as nesting is in tree-holes. It feeds on nectar, fruit and arthropods, depending on availability and requirements1,7. It has a highly variable breeding system, and is the only bird species known to mate facing each other9. Forced copulation by males occurs during the breeding season14. It lays between three to five eggs.

Threats Its extinction on the mainland may have been due to the introduction of black rat Rattus rattus or avian disease1, although it probably also declined owing to forest loss in parts of its range13. Factors limiting the translocated populations have not yet been confirmed5, but declines in the translocated population on the island of Mokoia were attributed to aspergillosis and the discontinuation of supplementary feeding12, and recent declines on Tiritiri Matangi have been attributed to an outbreak of Salmonella15. It appears to require large expanses of mature forest to survive which represents a major hurdle to conservation efforts10.

Conservation measures underway The first translocations in the 1980s failed, but three island populations were established between 1991 and 1995. Translocated birds are given supplementary food, and nest boxes are usually provided. Research to identify factors limiting the new populations indicates that translocation methods, population establishment and availability of food are not key issues on Mokoia3,4, but food shortages and competition for food with other endemic honeyeaters may be a problem on Kapiti8. Further islands are being assessed for population establishment. A small captive population is held, but numbers have gradually declined11. The provision of supplementary food has been shown to significantly increase productivity in translocated populations12. The population on Little Barrier Island is monitored and efforts are ongoing to generate an accurate population assessment.

Conservation measures proposed Protect, monitor and, where necessary, enhance populations on existing transfer sites. Research the species's requirements to aid establishment of additional populations. Establish at least one more self-sustaining population. Survey the population on Little Barrier and establish viability and trends. Maintain a captive-breeding population for research and advocacy. Raise public awareness2.

References 1. Angehr (1984). 2. Armstrong (1996). 3. Armstrong and Perrott (2000). 4. Armstrong et al. (1999). 5. D. P. Armstrong in litt. (1999). 6. S. Boyd in litt (1999). 7. Castro et al. (1994b). 8. Castro et al. (1994a). 9. Castro et al. (1996). 10. I. Castro in litt. (1999). 11. Rasch et al. (1996). 12. Castro et al. (2003). 13. Department of Conservation (2005). 14. Low (2005). 15. Ewen et al. (2007).

Further web sources of information

New Zealand Govt - Dept of Conservation - Recovery Plan

Text account compilers Phil Benstead (BirdLife International), Jeremy Bird (BirdLife International), Stuart Butchart (BirdLife International), Rachel McClellan (BirdLife International)

Contributors D. P Armstrong, S Boyd, I Castro, John G Ewen (Zoological Society of London)

IUCN Red List evaluators Jeremy Bird (BirdLife International), Stuart Butchart (BirdLife International)

Recommended citation BirdLife International (2010) Species factsheet: Notiomystis cincta. Downloaded from http://www.birdlife.org on 9/9/2010

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums


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