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Location Northern Mariana Islands (to USA), Tinian Island
Central coordinates 145o 38.00' East  15o 0.00' North
IBA criteria A1, A2
Area 9,888 ha
Altitude 0 - 178m
Year of IBA assessment 2007

Site description The proposed Tinian Island IBA encompasses the majority of the island, excluding a small settlement in the southern part of the island and including a large military leasehold area in the north. Part of the military leasehold area is designated a National Historical Site. The military leasehold areas are used for training exercises, but are uninhabited. The proposed IBA includes the Hagoi Marsh and Marpo Swamp areas, which are important as water sources and as animal habitat.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Micronesian Scrubfowl Megapodius laperouse resident  present  A1, A2  Endangered 
Mariana Fruit-dove Ptilinopus roseicapilla resident  1982  2,500-9,999 individuals  unknown  A1, A2  Endangered 
White-throated Ground-dove Alopecoenas xanthonurus resident  1982  250-999 individuals  unknown  A1, A2  Near Threatened 
Micronesian Myzomela Myzomela rubratra resident  1982  2,500-9,999 individuals  unknown  A2  Least Concern 
Rufous Fantail Rhipidura rufifrons resident  1982  20,000-49,999 individuals  unknown  A2  Least Concern 
Tinian Monarch Monarcha takatsukasae resident  1982  20,000-49,999 individuals  unknown  A1, A2  Vulnerable 
Bridled White-eye Zosterops conspicillatus resident  1982  100,000-499,999 individuals  unknown  A1, A2  Endangered 
Micronesian Starling Aplonis opaca resident  1982  10,000-19,999 individuals  unknown  A2  Least Concern 

Protection status There are no formal protective mechanisms, although the military must ensure the integrity of the National Historical Site and natural features of the area. There are some local, small conservation areas on Tinian, such as the Airport Mitigation Site, a small conservation area in the southwest corner of the island established for Tinian Monarchs, and a small mitigation area in the central part of the island (A. Marshall, pers. comm.).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Tinian Island. Downloaded from on 18/09/2014

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