Calonectris diomedea
It was designated a natural reserve in 1971, recognising its role as a very important nesting point for several species of birds. Since then, the susceptible bird populations (namely Cory's shearwater) and nearby waters have been more closely protected by the Portuguese government. Given its status, remoteness and few fresh water sources, the archipelago is today largely uninhabited. The only residents year-round are stationed on Selvagem Grande Island, which includes reserve staff and scientists conducting research on wildlife. Two rangers are also usually resident on Selvagem Pequena between May and October. In May 2016, a National Geographic Society scientific expedition prompted the extension of the marine reserve.