Reichel, J. and Glass, P. (1991) Checklist of the birds of the Mariana Islands. 'Elapiao, 5(1): 3-11.
Colonies Surveyed (10)
Northern Mariana Islands and Guam EEZ -
Colony: Uracas
Northern Mariana Islands and Guam EEZ -
Colony: Sarigan
Northern Mariana Islands and Guam EEZ -
Colony: Guguan
Northern Mariana Islands and Guam EEZ -
Colony: Farallon de Medinilla
Northern Mariana Islands and Guam EEZ -
Colony: East Island
Northern Mariana Islands and Guam EEZ -
Colony: Asuncion
Northern Mariana Islands and Guam EEZ -
Colony: Anatahan
Northern Mariana Islands and Guam EEZ -
Colony: Alamagan
Northern Mariana Islands and Guam EEZ -
Colony: Agrihan
Northern Mariana Islands and Guam EEZ -
Colony: Pagan