email a friend
printable version
VU
White-browed Jungle-flycatcher Rhinomyias insignis

Justification
This montane flycatcher qualifies as Vulnerable because its small, naturally fragmented range and population are subject to continuing rapid declines as a result of habitat destruction, chiefly around the lower limit of its altitudinal range.

Taxonomic source(s)
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

Identification
19 cm. Large, vividly patterned, skulking flycatcher. Olive-brown head and upperparts, rufous-fringed wings and tail. Prominent bright white supercilium and throat. Dark rufescent-brown sides of throat and breast-band, bright burnt-orange flanks, white belly and undertail-coverts. Similar spp. Eye-browed Thrush Turdus obscurus superficially similar but has very different behaviour, paler, greyer head and lacks dark breast-band. Voice Not well known but thought to utter thin high-pitched phrases. Hints Skulking and seldom seen. Most likely to be located by song.

Distribution and population
Rhinomyias insignis is endemic to the mountains of northern Luzon in the Philippines, where it is known from various sites in the Cordillera Central and from Mt Los Dos Cuernos and Mt Palali in the Sierra Madre. It is generally shy, quiet and difficult to observe, but recent trapping studies revealed it to be common at Balbalan-Balbalasang National Park, and also on Mt. Amuyao (L. Heaney in litt. 2007). It may have been previously under-recorded owing to its furtive nature, and could be more widespread than currently thought. However, trapping studies at various montane sites outside the Cordillera Central and Sierra Madre between 2000 and 2007 failed to find it (L. Heaney in litt. 2007).

Population justification
The population is estimated to number 2,500-9,999 mature individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 3,750-14,999 individuals in total, rounded here to 3,500-15,000 individuals.

Trend justification
On-going habitat loss and degradation are known to be occurring within the range of this species, suggesting that rapid population declines are likely to be occurring.

Ecology
It inhabits the understorey of montane or mossy forest above 950 m (principally above 1,500 m), apparently favouring thick, shady patches in areas dominated by oaks. However, it has also been recorded in forest with little undergrowth and also in second growth adjacent to oak-dominated primary forest.

Threats
Habitat destruction is the chief threat. In 1988, an estimated 24% of Luzon remained forested and forest cover in the Sierra Madre has declined by 83% since the 1930s. Mossy forests of the Cordillera Central are threatened by conversion to agricultural land, primarily for vegetable production (M. Poulsen in litt. 2007). Several areas on Mt Pulog are being cleared for agriculture, with occasional selective logging also occurring there. Deforestation is creeping up the slopes of Mt Polis, and Mt Data is now almost devoid of forest (M. Poulsen in litt. 2012).


Conservation Actions Underway
It occurs in Mt Pulog National Park, and the recent record from the Mt Los Dos Cuernos suggests that a healthy population could persist in the Northern Sierra Madre Natural Park, as well as in the nearby Penablanca Landscape and Seascape Reserve (M. V. Duya in litt. 2007). Conservation Actions Proposed
Conduct surveys using mist-nets to determine its current distribution and status in the Cordillera Central and the Sierra Madre mountains. Extend the Northern Sierra Madre Natural Park to incorporate Mt Los Dos Cuernos. Propose further known key sites, including Mt Polis, for establishment as formal protected areas. Control habitat degradation, including the expansion of vegetable cultivation, in Mt Pulog National Park.

References
Collar, N. J.; Mallari, N. A. D.; Tabaranza, B. R. J. 1999. Threatened birds of the Philippines: the Haribon Foundation/BirdLife International Red Data Book. Bookmark, Makati City.

Further web sources of information
Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).

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., Derhé, M., Gilroy, J.

Contributors
Duya, M., Heaney, L., Poulsen, M.

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

Recommended citation
BirdLife International (2014) Species factsheet: Rhinomyias insignis. Downloaded from http://www.birdlife.org on 20/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/12/2014.

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.

Additional resources for this species

ARKive species - White-browed jungle-flycatcher (Rhinomyias insignis) 0

Key facts
Current IUCN Red List category Vulnerable
Family Muscicapidae (Chats and Old World flycatchers)
Species name author Ogilvie-Grant, 1895
Population size 2500-9999 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 9,800 km2
Country endemic? Yes
Links to further information
- Additional Information on this species