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White-throated Jungle-flycatcher Rhinomyias albigularis
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Justification
This flycatcher qualifies as Endangered because it has a very small, declining range that is suffering severe fragmentation as a result of deforestation, particularly in the lowlands. However, the recent discovery of the species at previously unknown sites suggests it may be more widespread than was previously thought.

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
17 cm. Medium-large, drab, unobtrusive flycatcher. Olive-brown head with indistinct buffy supercilium. Rest of upperparts slightly warmer brown becoming chestnut on uppertail-coverts and tail. White throat, isolated from rest of white underparts by broad brownish breast-band. Similar spp. White-vented Whistler Pachycephala homeyeri has uniformly pale underparts, lacking white throat and contrasting breast-band. Voice Series of rapid, rising high-pitched ti-ti-ti-ti-ti-tip notes, and also series of nearly inaudible pharses of 2-5 syllables zeeee-zu-zi-zi or zeeeoo-zi-zu-zi mixed with churring notes. Single high-pitched whistle notes of seee, sometimes repeated, can also be heard. .

Distribution and population
Rhinomyias albigularis is endemic to the Western Visayas in the Philippines, where it is known from Negros, Guimaras and Panay. Formerly widespread (though always scarce on Negros), it has been recorded less often in recent years, although still occurs throughout primary forest on Panay and is probably under-recorded in general owing to its secretive habits (E. Curio in litt. 2012). Habitat clearance may already have eliminated some local populations, e.g. at Ban-ban and Mambucal (A. Bucol in litt. 2007).  It was last recorded on Guimaras in 1887 and is presumed extinct there.

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
Habitat destruction is continuing to affect the range of this species, implying that ongoing rapid population declines are likely to be taking place.

Ecology
It inhabits the shady lower storeys of lowland and mid-mountain forest, generally at or below 950 m but occasionally up to perhaps 1,350 m. Although it prefers primary forest, it has been recorded in secondary growth and even in a tree nursery.

Threats
The major threat is continuing forest destruction. Chronic deforestation led to its extinction on Guimaras. An estimated 4% of Negros and 8% of Panay remained forested in 1988, most of it above 1,000 m. Remaining lowland forest is likely to shrink further through clearance for shifting cultivation, charcoal production and timber extraction. At Ban-ban (Negros), illegal logging and harvesting of forest products (e.g. tree ferns and rattans) was a major problem in 1991 and forest at the site has now been completely removed (A. Bucol in litt. 2007).

Conservation Actions Underway
On Panay, it occurs in the tiny (0.5 km2) Sampunong Bolo National Park, and two proposed national parks, North-west Panay Peninsula and Central Panay Mts. The latter reportedly contains the largest block of remnant forest in the Western Visayas. On Negros, it has been recorded recently in North Negros Forest Reserve, and also Mt Canlaon Natural Park, although it is thought little suitable habitat remains. Conservation Actions Proposed
Conduct further surveys, including mist-netting, particularly on Panay (e.g. Bulabong Puti-an National Park on Panay) and also in remaining forest tracts on Negros, to establish its distribution and current status. Establish the proposed Central Panay Mts and North-west Panay Peninsula national parks and propose further key sites for designation as formal protected areas. Seek to obtain stronger protection of remaining forest areas on Panay and Negros, including securing funding to increase the number of forest rangers, as well as strengthening enforcement measures to prevent illegal logging (E. Curio in litt. 2007).

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.

Turner, C..; Tamblyn, A.; Dray, R.; Ledesma, J. M.; Maunder, L.; Raines, P. 2003. Negros Avifauna: A comparison of community composition between different habitat types within the North Negros Forest Reserve, Negros Occidental, Philippines. Silliman Journal 44(2): 136-157.

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., Khwaja, N.

Contributors
Bucol, A., Curio, E., Hornbuckle, J., Brooks, T.

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

Recommended citation
BirdLife International (2014) Species factsheet: Rhinomyias albigularis. Downloaded from http://www.birdlife.org on 15/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 15/09/2014.

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-throated jungle-flycatcher (Rhinomyias albigularis)

Key facts
Current IUCN Red List category Endangered
Family Muscicapidae (Chats and Old World flycatchers)
Species name author Bourne & Worcester, 1894
Population size 2500-9999 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 23,400 km2
Country endemic? Yes
Links to further information
- Additional Information on this species