Jorge Corona 
Feathers #2 [EPUB ebook] 

Fresh from their near-miss escape from the Guards, Bianca and Poe strike a deal: If he guides her through the treacherous Maze, she will take him to see the White Guide, a feathered statue in the City that may hold the key to Poe’s origins. It’s an adventure that will take them from the lowest shadows to the highest rooftops, with untold dangers along the way…and not everyone in the Maze is happy about their new alliance.