Siege, , HarperCollins Publishers, Kathryn Lasky,Children’s / Teenage fiction: Action and adventure stories,Children’s / Teenage fiction and true stories, owl;barn owl;St Aegolius;Ga’Hoole;Soren;elf owl;St Aggie’s;Guardians;Gylfie;Kludd;tree;Pure Ones,, , United Kingdom, en-GBhttps://www.harpercollins.co.ukowl;barn owl;St Aegolius;Ga’Hoole;Soren;elf owl;St Aggie’s;Guardians;Gylfie;Kludd;tree;Pure Ones, [BLURB],[CITY],,books, ebooks, biblet, Book2look