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Location Philippines, Region X
Central coordinates 126o 2.00' East  9o 53.00' North
IBA criteria A1, A2
Area 67,726 ha
Altitude 0 - 290m
Year of IBA assessment 2001

Haribon Foundation



Site description This IBA includes the adjacent islands of Siargao and Bucas Grande Islands, which lie a few kilometers off the north-eastern coast of Mindanao. They are low-lying islands that rise to a maximum altitude of only 290 m. There are very extensive mangrove forests on the island, which cover a total of c. 8,700 ha. There are large areas of old growth lowland dipterocarp forest (reported to cover c.12% of the island) and secondary or residual forest (reported to cover 33% of the island), and areas of grassland (reported to cover 12% of the island).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Philippine Cockatoo Cacatua haematuropygia resident  2001  present  A1  Critically Endangered 
Giant Scops-owl Otus gurneyi resident  2001  present  A1  Vulnerable 
Alcedo argentata resident  2001  present  A1  Not Recognised 
Mindanao Broadbill Eurylaimus steerii resident  2001  present  A1  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Siargao Protected Landscape/Seascape 58,290 protected area contained by site 58,290  

Habitats

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

Other biodiversity Other threatened and endemic animals recorded on Siargao include the Saltwater Crocodile Crocodylus porosus, marine turtles (Hawksbill Turtle Eretmochelys imbricata, etc.), Philippine Tarsier Tarsius syrichta, Flying Lemur Cynocephalus volans and Dugong Dugong dugon. The interesting flora includes fire orchids, century orchids Dendrobium and Pitcher plants Nepenthes spp.

Protection status Siargao Island was declared a Protected Landscape and Seascape in 1996 (with an area of 278,914.131 ha, and the coordinates: 9o30’-10o05’N 125o50’-126o15’E). It is a GEF CPPAP site (157,378 ha, of which 67,726 ha is terrestrial).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Siargao Island Protected Landscape and Seascape. Downloaded from http://www.birdlife.org on 20/09/2014

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