Cousin lies just off the southwest coast of its close neighbour Praslin, just next to its island neighbour Cousine. Cousin is one of nature's treasure troves where every year 250,000 birds nest, among them the Seychelles sunbird, red turtle dove and moor hen. There is a population of geckoes on the island, giant tortoises introduced from Aldabra and Cousin is also a favourite nesting site for hawksbill turtles.