Bird Area (IBA) by BirdLife International because it supports populations of Micronesian megapodes, white-throated ground doves, sooty terns, grey-backed terns, Micronesian myzomelas and Micronesian starlings. References Russell E. Brainard et al.: Coral reef ecosystem monitoring report of the Mariana Archipelago: 2003–2007. (=PIFSC Special Publication, SP-12-01) NOAA Fisheries, Pacific Islands Fisheries Science Center 2012 External links Pascal Horst Lehne and Christoph Gäbler: Über die Marianen. Lehne-Verlag, Wohldorf in Germany 1972. and Guguan Guguan Former German colonies Islands of the Northern Mariana Islands Active volcanoes Volcanoes of the Northern Mariana Islands Stratovolcanoes of the United States Calderas of Oceania Uninhabited islands of the Northern Mariana Islands Important Bird Areas of the Northern Mariana Islands Seabird colonies