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Location Philippines, Region VII
Central coordinates 124o 3.00' East  10o 16.00' North
IBA criteria A1, A4i, A4iii
Area 5,800 ha
Year of IBA assessment 2001

Haribon Foundation

Site description Olango is a low lying island off the east coast of Mactan Island (PH070). It lies between Cebu and Bohol Islands, 4 km east of Mactan and 15 km east of Cebu City. It is relatively accessible as it is close to Cebu Mactan International Airport. The main habitats include extensive intertidal coralline sand flats and mudflats, mangrove swamps, seagrass beds and coral reefs (note that the area given above includes about 2,900 ha of intertidal flats). There are coconut plantations and a few small areas of agricultural crops in the interior of the island, and the waters around the island support an important fishery. Olango Island is popular with visiting birdwatchers.

Key Biodiversity Olango Island is one of the most important staging areas for migratory shorebirds in the central Philippines. Over 10,000 shorebirds have been recorded at one time in the 1980’s, and the total number using the site may be as many as 50,000. These include significant numbers of Asian Dowitcher, for which Olango is the most important site known in the Philippines, and the numbers of several other waterbird species, including Eurasian Curlew and Far Eastern Curlew, are probably of international importance. Olango is notable for the concentrations of the threatened Chinese Egret and Philippine Duck that occur there.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Philippine Duck Anas luzonica resident  2001  present  A1, A4i  Vulnerable 
Great White Egret Ardea alba unknown  2001  present  A4i  Least Concern 
Chinese Egret Egretta eulophotes non-breeding  2001  present  A1, A4i  Vulnerable 
Eurasian Curlew Numenius arquata winter  2001  present  A4i  Near Threatened 
Far Eastern Curlew Numenius madagascariensis passage  2001  present  A4i  Endangered 
A4iii Species group - waterbirds unknown  2001  20,000 individuals  unknown  A4iii   

IBA Monitoring

2001 high not assessed not assessed
Good - based on reliable and complete / representative data

Biological resource use fishing & harvesting aquatic resources - unintentional effects: large scale happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Biological resource use logging & wood harvesting - unintentional effects: subsistence/small scale happening now some of area/population (10-49%) moderate to rapid deterioration high

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Olango Island Wildlife Sanctuary Wetlands of International Importance (Ramsar) 5,800 is identical to site 5,800  


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

Protection status This IBA includes Olango Island Wildlife Sanctuary (920 ha), which was declared by Proclamation No. 903 on 14 May 1992.

References Custodio (1996); Davies et al. (1990); Scott (1989).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Olango Island. Downloaded from on 27/10/2016

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