This book is a continuation one of my very favorite fairy tales, The Wild Swans. Rafe Martin tells the story of Ardwin, the sixth brother whose shirt was not finished and whose left arm remained a swan wing. As he grows, Ardwin can't seem to find his place. His wing allows him to talk to animals but at the same time causes him no end of trouble around people. When his father, the king, tries to marry him to the mad king Ulfius' daughter, he heads out on his own to find where he belongs.
This story brought in elements from other fairy tales which would sort of make me say "huh?" at first but in the end I liked the twist they added. A fun fantasy.