|Location||Northern Mariana Islands (to USA), Northern Islands|
|Central coordinates||145o 50.00' East 17o 36.00' North|
|IBA criteria||A1, A2|
|Altitude||0 - 774m|
|Year of IBA assessment||2007|
Site description The proposed Alamagan Island IBA is one of only two islands with extant populations of Nightingale Reed Warblers. The interior of the island has steep slopes cut by steep ravines; other areas are grassland or bare lava flows.
Key Biodiversity The entire island of Alamagan (Figure 18) is proposed as an IBA under A1 and A2 criteria, specifically for its population of Nightingale Reed Warblers. The island is also home to Micronesian Megapodes, White-throated Ground-Doves, Collared Kingfishers, Micronesian Starlings, and Micronesian Honeyeaters. Currently, populations of Nightingale Reed Warblers are found only on Saipan and Alamagan (DFW, 2007a), with approximately 100 pairs residing on Alamagan. Although Micronesian Megapodes and Nightingale Reed-Warblers prefer to use forested areas, the entire island is proposed as an IBA due to its small size.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Micronesian Scrubfowl Megapodius laperouse||resident||-||present||-||A1, A2||Endangered|
|White-throated Ground-dove Alopecoenas xanthonurus||resident||-||present||-||A1, A2||Near Threatened|
|Micronesian Myzomela Myzomela rubratra||resident||-||present||-||A2||Least Concern|
|Nightingale Reed-warbler Acrocephalus luscinius||resident||-||100 breeding pairs||unknown||A1, A2||Critically Endangered|
|Micronesian Starling Aplonis opaca||resident||-||present||-||A2||Least Concern|
|2007||medium||not assessed||not assessed|
|Invasive & other problematic species, genes & diseases||invasive non-native/alien species/diseases - named species||happening now||some of area/population (10-49%)||slow but significant deterioration||medium|
|Residential and commercial development||housing and urban areas||likely in short term (within 4 years)||some of area/population (10-49%)||slow but significant deterioration||medium|
Protection status There are no protected areas at present.
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Recommended citation BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Alamagan Island. Downloaded from http://www.birdlife.org on 30/11/2015
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