Guam Rail Running Across Trail

An endemic ko'ko' (Guam rail) running across a trail on Cocos, an offshore island located at the southernmost tip of Guam. Cocos is the only location on Guam that has allowed native species to persist in the absence of non-native species such as rats, cats, and snakes. Rails were introduced to the island after an island-wide rat eradication effort. Since then, they have successfully established and spread across the island, demonstrating that native species can recover when invasive predators are controlled.