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LC
Rockwarbler Origma solitaria

Justification
Although this species may have a restricted range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Taxonomic source(s)
Christidis, L.; Boles, W. E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.

Distribution and population
This taxon is the only bird species endemic to New South Wales, Australia. It is abundant through a large area of the Hawkesbury Sandstone both north and south of Sydney. A recent decline of 65% in reporting rate for this species in its core bioregion, the Sydney basin, based on atlas survey work, is not associated with a contraction in range and is believed to be an artefact of observer behaviour, as during the second atlas survey birders visited fewer forest fragments where the species occurs.

Population justification
The global population size has not been quantified, but the species is reported to be locally common (Flegg and Madge 1995).

Trend justification
The species has suffered from urban developments on the edges of its range near Sydney (Blakers et al. 1984), however, most of its habitat is now protected and the population is suspected to be stable.

Threats
The species has suffered from urban developments on the edges of its range near Sydney (Blakers et al. 1984), however, most of its habitat is now protected within national parks and reserves (del Hoyo et al. 2007).

References
Blakers, M.; Davies, S. J. J. F.; Reilly, P. N. 1984. The atlas of Australian birds. Royal Australasian Ornithologists' Union, Victoria.

Flegg, J. and Madge, S. 1995. New Holland Publishers Australia, Chatswood, Australia.

Garnett, S. 1992. Threatened and extinct birds of Australia. Royal Australasian Ornithologists' Union and Australian National Parks and Wildlife Service, Moonee Ponds, Australia.

Further web sources of information
Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Ekstrom, J., Butchart, S., Harding, M., Fisher, S.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2014) Species factsheet: Origma solitaria. Downloaded from http://www.birdlife.org on 16/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/09/2014.

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.

Key facts
Current IUCN Red List category Least Concern
Family Acanthizidae (Thornbills and gerygones)
Species name author (Lewin, 1808)
Population size Unknown mature individuals
Population trend Stable
Distribution size (breeding/resident) 57,000 km2
Country endemic? Yes
Links to further information
- Additional Information on this species