The Siege, The Guardians of Ga'Hoole book 4
by Kathryn Lasky
I liked that in this book you learn more about the Pure ones( the group of evil Barn Owls) and also get to revisited St. Aggies (where they escaped form in the first book). It is always nice to revisit characters from the past. Once again I thought the story was interesting but still not as good as the first book. There seems to be a lot of books in this series and I honestly don't know if I will get through them all. There are a few things I would like to learn the truth about though, so I'm sure I will continue reading them, at least for now.