Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
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Source: IUCN

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
BirdLife International

Reviewer/s
Bird, J., Butchart, S.

Contributor/s

Justification
This species has an extremely large range, and hence does not 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.

History
  • 2008
    Least Concern
  • 2004
    Least Concern
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Population

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

Buff-rumped Thornbill

The Buff-rumped Thornbill (Acanthiza reguloides)[2] is a species of thornbill found in open forest land in east Australia, specifically around Sydney, south of Chinchilla and east of Cobar[3] in an area of 1,000,000–10,000,000 km².[1] The Buff-rumped Thornbill is found in temperate or subtropical/tropical moist environments[1] living and feeding amidst the ground foliage, hence the term "buff-rump".[4] However they are known to prefer nesting sites in areas above ground level, particularly amongst the bark of trees, one to two metres above the ground.[4] Of a similar size to other thornbills, 8–10 cm long, the Buff-rumped Thornbill is identifiable by its "buff-coloured rump and belly"[3] and white irides in its eye.[4]

Since 1926 the Buff-rumped Thornbill and the Varied Thornbill (A. squamata) have been combined as a single species.[5], however this is despite considerable differences between extreme examples of the two groups.[3] The Buff-rumped Thornbill is described as 'uncommon' on some occasions however it is not deemed to be endangered and has been in the low risk category for the International Union for Conservation of Nature and Natural Resources since 1988.[1]

Buff-rumped Thornbill girraween.ogg
Wallangarra, S. Queensland, Australia


References

  1. ^ a b c d e BirdLife International (2008). Acanthiza reguloides. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 18 February 2009.
  2. ^ Koenig p. 72
  3. ^ a b c Ford p. 53
  4. ^ a b c Wildlife Buff-rumped Thornbill Acanthiza reguloides reguloides retrieved June 18, 2007
  5. ^ Schodde
  • Ford, J. Pigment and Morphometric Variation in the Buff-rumped Thornbill 1985
  • Koenig, Walter D. Ecology and Evolution of Cooperative Breeding in Birds, 2004 ISBN 0-521-53099-7
  • Schodde, R. Interim List of Australian Songbirds: Passerines, 1975, RAOU, Melbourne.
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