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Location Palau, Peleliu
Central coordinates 134o 14.70' East  7o 0.69' North
IBA criteria A1, A2
Area 1,891 ha
Altitude 0 - 75m
Year of IBA assessment 2008

Palau Conservation Society

Site description Priority sites were found throughout Peleliu, and thus the IBA was drawn to include the entire island. This IBA does not include the island of Ngedebus to the north. Peleliu is one of the two southernmost islands in the main Palau archipelago and has extensive flat lands surrounding steep ridges. Most of the flat areas are on the western coast. The island has the greatest concentration of mangrove habitat outside of Babeldaob. It is also famous for its WWII sites including Bloody Nose Ridge and Orange Beach, and the remaining tanks, guns, and other military structures scattered throughout the island. There are 700 people living in five villages in Peleliu. Most of the island is privately or clan owned. The mangroves are managed by the state.

Key Biodiversity Peleliu is notable because all but one of the restricted- range species were found during the national bird surveys in 2004 and 2005. In fact, during these surveys Peleliu had the highest number of bird species (diversity) and the highest number of individual birds recorded (abundance). Large numbers of migratory birds were seen as well. Forest birds were observed to be particularly abundant at Bloody Nose Ridge. Peleliu is one of two sites in Palau where the Giant White-eye was observed. The Giant White-eye was commonly found in the interior forests, however was not observed in the mangroves.

Non-bird biodiversity: The forests of Peleliu have shown significant recovery after WWII which left the island almost completely deforested. Today thriving secondary vegetation covers about 50% of the island. The remaining forested areas include limestone forest, swamp forest, Casuarina forest and mangroves (Cole et al. 1987). Fruit bats roost in the forests. Occasionally green and hawksbill turtles nest on Peleliu’s beaches, however, the eggs are often poached. Abandoned mining pits from the Japanese era serve as freshwater and saltwater habitats for birds and other important endangered species, such as the saltwater crocodile.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Micronesian Scrubfowl Megapodius laperouse resident  2005  present  A1, A2  Endangered 
Palau Ground-dove Alopecoenas canifrons resident  2005  present  A2  Near Threatened 
Palau Fruit-dove Ptilinopus pelewensis resident  2005  present  A2  Least Concern 
Micronesian Imperial-pigeon Ducula oceanica resident  2005  present  A2  Near Threatened 
Palau Swiftlet Aerodramus pelewensis resident  2005  present  A2  Least Concern 
Todiramphus cinnamominus resident  2005  present  A2  Not Recognised 
Micronesian Myzomela Myzomela rubratra resident  2005  present  A2  Least Concern 
Morningbird Pachycephala tenebrosa resident  2005  present  A2  Least Concern 
Palau Fantail Rhipidura lepida resident  2005  present  A2  Least Concern 
Mangrove Flycatcher Myiagra erythrops resident  2005  present  A2  Least Concern 
Palau Bush-warbler Cettia annae resident  2005  present  A2  Least Concern 
Caroline Islands White-eye Zosterops semperi resident  2005  present  A2  Least Concern 
Dusky White-eye Zosterops finschii resident  2005  present  A2  Least Concern 
Giant White-eye Megazosterops palauensis resident  2005  present  A2  Near Threatened 
Micronesian Starling Aplonis opaca resident  2005  present  A2  Least Concern 

IBA Monitoring

2008 not assessed not assessed negligible
Poor - based on little, or potentially unreliable/unrepresentative, data

Little/none of site covered (<10%)  No management planning has taken place  Very little or no conservation action taking place  negligible 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Tululeu Seagrass Conservation Area 40 protected area is adjacent to site 0  


IUCN habitat Habitat detail Extent (% of site)
Forest Lowland forest - mixed swamp; Mangrove forest (tropical)  major
Coastline Rocky areas; Sand dunes & beaches  minor

Land use

Land-use Extent (% of site)
agriculture minor
Notes: family plots for semi-subsistence farming of wetland taro, dryland crops and agroforestry
fisheries/aquaculture minor
Notes: small milkfish ponds
other minor
Notes: national historic sites associated with WWII

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

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