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Distribution and habitat preferences of the rufous bristlebird, Dasyornis broadbenti, in Portland, Victoria

Mitchell, Ellen and Wilson, Barbara 2003, Distribution and habitat preferences of the rufous bristlebird, Dasyornis broadbenti, in Portland, Victoria.

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Title Distribution and habitat preferences of the rufous bristlebird, Dasyornis broadbenti, in Portland, Victoria
Formatted title Distribution and habitat preferences of the rufous bristlebird, Dasyornis broadbenti, in Portland, Victoria
Author(s) Mitchell, Ellen
Wilson, Barbara
Conference name Australian Ornithological Conference (2003 : Canberra, A.C.T.)
Conference location Canberra, A.C.T.
Conference dates 10-13 December 2003
Publication date 2003
Summary The Rufous Bristlebird Dasyornis broadbenti is a ground-dwelling bird that is listed as nearthreatened (Lower Risk) in Victoria. The species has been observed in a variety of habitats ranging from thickets of shrubs in coastal gullies, shrubland and heathlands on limestone cliffs to sheltered gullies. This study aimed to assess the distribution and habitat preferences of a population of the species in Portland, southwest Victoria. Monthly surveys were conducted on foot in the study area for one hour following sunrise and one hour prior to sunset, and bird presence was recorded on the basis of calls and sightings. Observations outside of the survey times were also recorded to determine habitat utilisation. Vegetation floristics and structure and food availability were measured in areas where birds were present as well as surrounding areas where they were absent to determine habitat preferences. A population size of between 45 and 60 individuals was estimated in the 200ha study area. Bird presence was significantly positively correlated with increasing vegetation density. No significant associations were found between Rufous Bristlebird presence and the floristic associations. Although Rufous Bristlebirds occupy a variety of vegetation communities, results indicate that the key common factor appears to be structure of the vegetation. The findings of this study will be incorporated into a Geographic Information System to develop a spatial model of suitable habitat.
Language eng
Field of Research 050299 Environmental Science and Management not elsewhere classified
HERDC Research category L3 Extract of paper (minor conferences)
Persistent URL http://hdl.handle.net/10536/DRO/DU:30015701

Document type: Conference Paper
Collection: School of Ecology and Environment
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