As was Conway Twitty's "Rest Your Love On Me," but "Islands" got a Bee Gees-style production, especially on the chorus, while Conway simply made a song previously recorded by the Bee Gees into a country song.
There was a period in the 80s when the Bee Gees were dead to the radio because of over-saturation thanks to Saturday Night Fever. So the guys wrote some songs that still found their way to radio via Kenny Rogers, Dionne Warwick, Barbra Streisand, and many others. The guys did versions of those songs in their later shows.