Cousin Island

Cousin Island is one of the great conservation success stories of the Indian Ocean — a 29-hectare granitic island in the Seychelles that was transformed from a coconut plantation on the verge of ecological collapse into a thriving nature reserve whose seabird colonies, endemic species, and coral reefs now serve as a model for tropical island restoration worldwide. Purchased by the International Council for Bird Preservation (now BirdLife International) in 1968 to save the Seychelles warbler from extinction — the species had been reduced to just 26 individuals on Cousin — the island has since become a sanctuary where over 300,000 seabirds breed and the warbler population has recovered to sustainable levels.

The seabird colonies of Cousin are the island's most spectacular feature. Wedge-tailed shearwaters, white terns (fairy terns), and lesser noddies nest in such densities that the tree canopy seems to move with birds during the breeding season. The fairy terns, which lay their single egg on a bare branch without any nest — a strategy that seems reckless but works remarkably well — are among the most beautiful birds in the Seychelles, their translucent white plumage and dark eyes creating an image of ethereal delicacy. Hawksbill sea turtles nest on Cousin's beaches between October and February, and the island's wardens monitor and protect every nest, contributing data to regional turtle conservation programs.

The terrestrial ecology of Cousin has been carefully managed to favour native species. The invasive coconut palms that dominated the island under plantation management have been gradually removed, allowing native takamaka, bwa-d-tab, and Pisonia trees to regenerate — creating the canopy structure that the island's endemic species evolved to exploit. The Seychelles warbler, whose dramatic recovery from 26 to over 3,000 individuals (with populations established on several other islands) is one of the most celebrated examples of species rescue in conservation history, is readily observed during guided nature walks. The Seychelles fody, a bright red finch endemic to the granitic Seychelles, and the Seychelles magpie robin — another species brought back from the brink — also inhabit the island.

The surrounding marine environment is a designated Special Reserve extending 400 metres from the shoreline, protecting the fringing coral reef and the seagrass beds that provide feeding grounds for turtles and juvenile reef fish. Snorkelling from the beach reveals healthy coral formations, butterfly fish, parrotfish, and the octopuses that shelter in the rocky crevices. The management of Cousin by Nature Seychelles (a local conservation NGO) ensures that visitor numbers are strictly controlled, with guided tours limited to small groups during morning hours — an approach that minimises disturbance to nesting birds and turtles while providing visitors with an intimate, educational experience.

Cousin Island is visited by Emerald Yacht Cruises on Seychelles itineraries, with passengers arriving by Zodiac for guided nature walks. The island is open to visitors Monday through Friday, with guided tours conducted by resident wardens. The best visiting period is April through October during the southeast monsoon, when the weather is drier and the sea conditions most suitable for landing. The turtle nesting season from October through February adds an additional wildlife dimension.