Swan Isle is inhabited by arrogant swans and forgetful squirrels and has a beautiful lake there which is used by the swans. When Crispin was exiled, he landed there, and rescued Lord Arcneck's mate from being tangled up in water weeds and drowning, as well as a cygnet from a water snake. He met Whisper there, she was the only squirrel there that was polite. He fell in love with her and married her on Swan Isle, later, after she was killed by Gloss he buried her by the sea shore; he then flew home on Lord Arcneck. In Urchin and the Raven War, it fell temporarily to the ravens. During the battle there, when ravens were picking at "the princess's (Whisper's) grave", a squirrel named Pitter helped fight, and she was told by Crispin that "she was very valiant" for helping to save the Island. In book 5, the island get very hit of the rage tide.