the paper 'cariocas da gema': evidências de presença humana na ilha redonda no período pré-colonial' (truly carioca: evidence of human presence on ilha redonda in pre-colonial times) by archeologists angela buarque and the museu national and rogério oliveira examines in more detail and puts into perspective the first occupation of the cagarra islands, dating back thousands of years.

the paper aves marinhas e aquáticas das ilhas do litoral do estado do rio de janeiro (birds of marine and aquatic islands along the coastline of rio de janeiro) is a rare study containing a wealth of information on all bird species in the region.