• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Justification of Red List category
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 is suspected 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). Therefore, this species has been listed as Least Concern.

Population justification

The global population size has not been quantified, but the species is described as apparently very scarce or rare (König et al. 1999). It does, however, occur across New Guinea from sea level to 1,000 m (Beehler and Pratt 2016).

Trend justification
The population is suspected to be slowly declining owing to ongoing habitat destruction. Across the mainland coastal provinces of Papua New Guinea, 1.3% forest was lost plus 2.5% was logged between 2002 and 2014 (Bryan and Shearman 2015).

Uroglaux dimorpha is sparsely but widely distributed in New Guinea (Papua, formerly Irian Jaya, Indonesia and Papua New Guinea). In the 1980s and 1990s there had only been records from nine sites, including a series of individuals caught near Lae, Papua New Guinea (Hicks 1988, Lamonthe 1993, Shany 1995, K. D. Bishop in litt. 1999, P. Gregory in litt. 1999, T. Leary in litt. 2000, C. Makamet per B. Beehler in litt. 2000). There has, however, been a recent increase in records (related to the availability of sound-recordings); it is now known from about 20 localities (Beehler and Pratt 2016) and eBird records (eBird 2017) suggest it may be at many more sites than this.

It is a lowland forest species, occurring from sea level to 1,000 m and occasionally recorded to 1,500 m, and is also found in gallery forest in savanna (Coates 1985, Beehler and Pratt 2016). Although the species's tolerance of logged forest is uncertain, it has been recorded from degraded forest edge (G. Dutson in litt. 2016). It feeds on birds, rodents and insects (Pratt and Beehler 2015).

Its tolerance of degraded habitat is uncertain and it is potentially threatened by logging of lowland forests.

Conservation Actions Underway
CITES Appendix II.

Conservation Actions Proposed
Survey historical locations and potentially suitable habitats for the species. Study its ecological requirements, tolerance of habitat degradation and threats.

Text account compilers
Dutson, G., Derhé, M., Symes, A., Wheatley, H.

Contributors
Leary, T., Gregory, P., Dutson, G., Bishop, K.D., Beehler, B.

---

Recommended citation
BirdLife International (2024) Species factsheet: Papuan Hawk-owl Uroglaux dimorpha. Downloaded from https://datazone.birdlife.org/species/factsheet/papuan-hawk-owl-uroglaux-dimorpha on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 22/12/2024.