| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | AVES | STRIGIFORMES | TYTONIDAE |
| Scientific Name: | Tyto tenebricosa | |||
| Species Authority: | (Gould, 1845) | |||
Common Name/s:
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| Red List Category & Criteria: | Least Concern ver 3.1 | ||||||||||||||||||
| Year Published: | 2009 | ||||||||||||||||||
| Assessor/s: | BirdLife International | ||||||||||||||||||
| Reviewer/s: | Bird, J., Butchart, S. | ||||||||||||||||||
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Justification: This species has a very 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. |
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| History: |
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| Range Description: | This species has a large range along the west coast of Australia and on New Guinea (Indonesia and Papua New Guinea). Subspecies multipunctata, sometimes treated as a separate species, is a restricted-range taxon, being found only in a substantial area of rainforest in north-east Queensland (Australia), between Shiptons Flat (south of Cooktown), south to Bluewater range (north of Townsville), and inland to Mt Carbine, Atherton and Ravenshoe. Its range may extend to south of Townsville, to Mt Elliott. |
| Countries: |
Native:
Australia; Indonesia; Papua New Guinea
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| Range Map: | Click here to open the map viewer and explore range. |
| Population: | The global population size has not been quantified, but the species is described as probably rare (Konig et al. 1999). Subspecies multipunctata, a restricted-range taxon, has been estimated to number 2,000 breeding pairs (Higgins 1999). |
| Habitat and Ecology: | In Australia, it prefers deep, wet gully forest dominated by eucalypts, occurring in drier forest only when hunting; in New Guinea it occurs in lowland and montane rainforest and Araucaria pine forest, emerging into subalpine grassland and alpine boulderfields and ridges at altitudes of up to 4000 m to hunt (Bruce 1999). |
| Systems: | Terrestrial |
| Major Threat(s): | Some of subspecies multipunctata habitat has been cleared for agriculture, but a large area remains (Garnett 1992), and all logging has now stopped. There is some fragmentation of its former habitat, but in other areas, rainforest is rapidly expanding. |
| Citation: | BirdLife International 2009. Tyto tenebricosa. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 24 May 2012. |
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