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Location Philippines, Region IVa
Central coordinates 118o 18.00' East  9o 23.00' North
IBA criteria A1, A2
Area 50,000 ha
Altitude 50 - 1,798m
Year of IBA assessment 2001

Haribon Foundation

Site description This IBA includes the Victoria and Anapalan mountain ranges and the adjacent foothills and lowlands in central Palawan, to the south-west of Puerto Princesa. There are montane forests on the higher peaks and large tracts of little disturbed lowland forest in the valleys and foothills south-west of Iwahig Penal Colony, in the foothills on the Sulu Sea side of the mountains and to the shoreline on the South China Sea coast in some places. Victoria Peak is reported to support the largest area of ultramafic forest on Palawan, and other habitats there include lowland dipterocarp forest and lower and upper montane forest.

Key Biodiversity Iwahig Penal Colony is currently a popular destination for visiting bird-watchers, and most of the threatened and restricted-range birds of the Palawan Endemic Bird Area have been recorded in this area, including Palawan Striped-babbler, which is known only from montane forests in this IBA and Mt Mantalingajan (PH054). The forests of the Victoria and Anapalan ranges appear to support important populations of the threatened Philippine Cockatoo, Blue-headed Racquet-tail, Palawan Hornbill, Falcated Wren-babbler and Palawan Flycatcher, and possibly also of Palawan Peacock-pheasant.

Non-bird biodiversity: Mammals recorded in this IBA include Palawan tree shrew Tupaia palawensis, Palawan flying fox Acerodon leucotis, northern Palawan tree squirrel Sundasciurus juvencus, Palawan stink-badger Mydaus marchei, binturong Arctictis binturong, and Oriental short-clawed otter Amblonyx cinereus (found in fishponds and mangroves at Iwahig Penal Colony). The endemic Palawan montane tree squirrel Sundasciurus rabori occurs at high elevations there. The Victoria and Anapalan range is the type locality for the Palawan earless sphenomorphus Sphenomorphus palawanensis.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Palawan Peacock-pheasant Polyplectron napoleonis resident  2001  present  A1  Vulnerable 
Japanese Night-heron Gorsachius goisagi winter  2001  present  A1  Endangered 
Chinese Egret Egretta eulophotes non-breeding  2001  present  A1  Vulnerable 
Nisaetus philippensis resident  2001  present  A1  Not Recognised 
Blue-headed Racquet-tail Prioniturus platenae resident  2001  present  A1  Vulnerable 
Palawan Hornbill Anthracoceros marchei resident  2001  present  A1  Vulnerable 
Falcated Wren-babbler Ptilocichla falcata resident  2001  present  A1  Vulnerable 
Palawan Flycatcher Ficedula platenae resident  2001  present  A1  Vulnerable 
Philippine Cockatoo Cacatua haematuropygia resident  2001  present  A1  Critically Endangered 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Palawan Game Refuge and Bird Sanctuary 1,183,408 protected area contains site 50,000  
Palawan Parcel 1 Watershed Forest Reserve 3,035 protected area contained by site 3,035  
Palawan Parcel 2 Watershed Forest Reserve 4,749 protected area contained by site 4,749  


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

Protection status Not officially protected, although it is included in the Environmentally Critical Areas Network (ECAN) as a buffer zone.

References Alcala (1986); Alcala and Brown (1998); Castañeda (1993).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Victoria and Anepahan Ranges. Downloaded from on 22/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife