Illustration of nesting seabirds and other species,Ile Fregate,Rodrigues. Dugongs (Dugong dugon) (endangered/threatened species) once thrived in lagoons on Ile Fregate,while seabirds breed in huge numbers on the islet. Blue-footed booby (Sula nebouxii); red-footed booby (Sula sula); frigatebird (Fregata sp); island of Rodrigues (Rodriguez),a dependency of Mauritius, in the Indian Ocean.