 The island, first known as "Isla de San Francisco y Leon", then "Burnaby Island", and later as "Cayo del Pasaje" or "Passage Key", was a barrier island teaming with laughing gulls, royal terns, black skimmers, sandwich terns, brown pelicans and oystercatchers.The hurricanes of 2005 reduced the island to the current state that must be saved or allowed to disappear.Since then, the refuge is closed to all public use.