|Location||Philippines, Region XIII|
|Central coordinates||125o 43.00' East 9o 6.00' North|
|IBA criteria||A1, A2|
|Altitude||200 - 1,837m|
|Year of IBA assessment||2001|
Site description Mt Hilong hilong lies on the boundaries of Agusan del Norte, Agusan del Sur and Surigao del Sur Provinces, in the northern portion of the Diwata range of north-east Mindanao. It is the highest mountain in the range, but several of the other peaks included in the IBA also reach well over 1,000 m. The IBA comprises a large block of forest that is shown on recent forest cover maps. Much of this forest is montane, but there are also likely to be some substantial areas of lowland forest. The Cabadbaran-Santiago Natural Park is located on flat to rolling land from 200-1,700 m. It includes c. 3,002 ha (58%) of residual forest, including a 120 ha rattan plantation established by the DENR, c. 1,682 ha (33%) of brushland with medium-sized trees and c.318 ha (6%) of grassland. Cultivated land covers c.163 ha (3%), and is planted with corn, root crops and fast-growing exotic tree species, such as yemane or gmelina Gmelina arborea. Cabadbaran-Santiago Natural Park was declared as a forest watershed reservation because it is the main source of water for the municipalities of Cabadbaran and Santiago. A 500 ha area has been set aside as ancestral domain.
Key Biodiversity Many of the threatened and restricted-range species of the Mindanao and Eastern Visayas Endemic Bird Area have been recorded on Mt Hilong-hilong, most during collecting expeditions in the 1950s and 1960s. These birds include both lowland and montane forest specialists, and, given the relatively large areas of low altitude forest that are reported to remain in this IBA, it could prove to be one of the most important sites for lowland forest birds in the EBA. Some of these birds obviously occur at high densities there, notably Wattled Broadbill. Three of the restricted-range birds have subspecies that are only known from Mt Hilong-hilong (although they presumably occur elsewhere in the Diwata range), Grey-hooded Sunbird A. p. diuatae, Olive-capped Flowerpecker D. n. diuatae and Black-masked White-eye L. g. gracilis. The Pangulangan Caves harbor large populations of cave bats and swiftlets.
Non-bird biodiversity: The Pangulangan Caves harbour large populations of cave bats and swiftlets.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Japanese Night-heron Gorsachius goisagi||winter||2001||present||-||A1||Endangered|
|Philippine Eagle Pithecophaga jefferyi||resident||2001||present||-||A1||Critically Endangered|
|Mindanao Bleeding-heart Gallicolumba crinigera||resident||2001||present||-||A1||Vulnerable|
|Dark-eared Brown-dove Phapitreron brunneiceps||resident||2001||present||-||A1||Vulnerable|
|Giant Scops-owl Otus gurneyi||resident||2001||present||-||A1||Vulnerable|
|Philippine Eagle-owl Bubo philippensis||resident||2001||present||-||A1||Vulnerable|
|Alcedo argentata||resident||2001||present||-||A1||Not Recognised|
|Ceyx melanurus||resident||2001||present||-||A1||Not Recognised|
|Blue-capped Kingfisher Actenoides hombroni||resident||2001||present||-||A1||Vulnerable|
|Mindanao Broadbill Eurylaimus steerii||resident||2001||present||-||A1||Vulnerable|
|Azure-breasted Pitta Pitta steerii||resident||2001||present||-||A1||Vulnerable|
|Celestial Monarch Hypothymis coelestis||resident||2001||present||-||A1||Vulnerable|
|Little Slaty Flycatcher Ficedula basilanica||resident||2001||present||-||A1||Vulnerable|
|Philippine Leafbird Chloropsis flavipennis||resident||2001||present||-||A1||Vulnerable|
|Philippine Cockatoo Cacatua haematuropygia||resident||2001||present||-||A1||Critically Endangered|
|2013||very high||not assessed||low|
|Agricultural expansion and intensification||annual & perennial non-timber crops - shifting agriculture||happening now||majority/most of area/population (50-90%)||very rapid to severe deterioration||very high|
|Energy production and mining||mining and quarrying||happening now||small area/few individuals (<10%)||slow but significant deterioration||low|
|Human intrusions and disturbance||work and other activities||happening now||majority/most of area/population (50-90%)||moderate to rapid deterioration||high|
|Over-exploitation, persecution and control of species||logging & wood harvesting - unintentional effects: subsistence/small scale||happening now||majority/most of area/population (50-90%)||very rapid to severe deterioration||very high|
|Transportation and service corridors||roads and railroads||happening now||some of area/population (10-49%)||slow but significant deterioration||medium|
|Most of site (50-90%) covered (including the most critical parts for important bird species)||A management plan exists but it is out of date or not comprehensive||Some limited conservation initiatives are in place||low|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Andanan River||Watershed Forest Reserve||17,888||protected area overlaps with site||0|
|Cabadbaran||Watershed Forest Reserve||15,977||protected area overlaps with site||0|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial - terrestrial||-|
Protection status The proposed Cabadbaran-Santiago Natural Park lies within the Mt Hilong-hilong IBA. The area was declared as a forest watershed reservation by Presidential Proclamation No. 834, series of 1991.
Contribute Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.
Recommended citation BirdLife International (2015) Important Bird Areas factsheet: Mount Hilong-hilong. Downloaded from http://www.birdlife.org on 03/05/2015
To provide new information to update this factsheet or to correct any errors, please email BirdLife