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Location Philippines, Region X,Region XI
Central coordinates 126o 3.00' East  8o 45.00' North
IBA criteria A1, A2
Area 10,000 ha
Altitude 0 - 1,261m
Year of IBA assessment 2001

Haribon Foundation

Site description Mt Diwata is at the southern end of the Diwata range in Agusan del Sur and Surigao del Sur Provinces in north-eastern Mindanao. This IBA includes the forested southern section of this range, south of Mt Hilong-Hilong (PH083) (the boundary between the two IBA’s is at c.9 o N). The southern part of the Diwata range is relatively low, the highest peak rising to only 1,261 m. A large block of old growth forest is shown in this IBA on recent forest cover maps. The forest will be montane around the higher peaks of the IBA, but there are also likely to be substantial areas of lowland forest on the lower slopes.

Key Biodiversity Several of the threatened and restricted-range species of the Mindanao and Eastern Visayas Endemic Bird Area have been recorded in or near to the Mt Diwata range, including Philippine Eagle, mostly during a collecting expedition in 1976. The mountains around Mt Diwata are less well studied than Mt Hilong-hilong (PH083) in the northern section of the Diwata range, but they are likely to prove to have a similar avifauna. The extensive lowland and montane forests that are reported to survive in this IBA could therefore support significant populations of many species of conservation concern, and the lowland forests may prove to be particularly important.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Philippine Eagle Pithecophaga jefferyi resident  2001  present  A1  Critically Endangered 
Mindanao Bleeding-heart Gallicolumba crinigera resident  2001  present  A1  Vulnerable 
Giant Scops-owl Otus gurneyi 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 
Philippine Leafbird Chloropsis flavipennis resident  2001  present  A1  Vulnerable 


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial   -
Forest   -

Protection status Not officially protected.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Mount Diwata Range. Downloaded from on 24/10/2016

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