Inspired by the ancient Greek play Ornithes (The Birds, 414 BC) by Aristophanes; first book in a series by Greek archaeologist Maria Kamoulakou-Marangoudakis. In this delightful tale, two best friends rescue a pair of crows and are swept away to the Land of the Birds. Join them in their adventure where they meet the bird king and his subjects, and help the birds unite to achieve the impossible: a bird city in the clouds called Ornithopolis. Sky Cloud City is the first book in the series, The Adventures of Hope & Trusty. Inspired by the ancient Greek play Ornithes (The Birds, 414 BC) by Aristophanes.