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Rufous Bristlebird Dasyornis broadbenti

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 endemic to Australia. Nominate broadbenti occurs in near-coastal environments from Port Fairy, Victoria, to the mouth of the Murray River, South Australia. Subspecies caryochrous was thought to be largely confined to the coast between Peterborough and Point Addis east of Anglesea, Western Victoria, but is now known to occur extensively within the Otway Range. Subspecies litoralis, endemic to Western Australia, is extinct, probably as a result of fire, and was last seen in 1940 (Glauert 1944).

Population justification
The population is estimated to number 4,000-28,000 individuals, roughly equating to 2,700-19,000 mature individuals.

Trend justification
This population is suspected to be in decline owing to habitat loss and degradation, disturbance, fires and drought (del Hoyo et al. 2007).

Ecology
The species occurs in scrub, heathland and forest.

Threats
Historically, the range of the species has declined as a result of clearance for agriculture; habitat fragmentation has already resulted in the isolation of some subpopulations of broadbenti. On top of this, grazing by rabbits and modification by exotic weeds could have long-term effects for broadbenti, and concern has been expressed about its rates of infertility. Coastal urban development has also destroyed habitat, and is the greatest threat facing caryochrous, which, given its essentially linear distribution, is particularly vulnerable to fragmentation. For caryochrous, effects of fragmentation are likely to be exacerbated by periodic wildfire from which the habitat takes at least six years to become suitable again. The species may also be vulnerable to cat and fox predation (Garnett and Crowley 2000, Seymour et al. 2003).

References
del Hoyo, J.; Elliott, A.; Christie, D. 2007. Handbook of the Birds of the World, vol. 12: Picathartes to Tits and Chickadees. Lynx Edicions, Barcelona, Spain.

Garnett, S. T.; Crowley, G. M. 2000. The action plan for Australian birds 2000. Environment Australia, Canberra.

Seymour, J.; Paton, D. C.; Rogers, D. J. 2003. The conservation status of the Rufous Bristlebird Dasyornis broadbenti in South Australia. Emu 103: 315-321.

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
Benstead, P., Butchart, S., Ekstrom, J., Fisher, S., Harding, M., Khwaja, N.

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

Recommended citation
BirdLife International (2014) Species factsheet: Dasyornis broadbenti. Downloaded from http://www.birdlife.org on 27/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 27/12/2014.

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 Dasyornithidae (Bristlebirds)
Species name author (Milligan, 1902)
Population size 2700-19000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 26,800 km2
Country endemic? Yes
Links to further information
- Additional Information on this species