In lots of ways this book was a joy to read, some of the passages are just glorious (see pages 20 and 124). I loved Lucky and in some ways the anthropomorphising of him served to highlight the damage we do when we cage birds. I also loved the two main families. Sorensen managed to give each member a unique personality as well as giving each family its own personality.
I just feel that the ending was a bit flat. There needed to be more tension in the story so it went somewhere, either in terms of plot or character development. With a better ending, or resolution it would have easily been five stars.