Wings of Fire -Winter Turning by Tui T. Sutherland

My ten year old is enjoying reading this series.  He read this book to himself.
Winter, an Icewing, must pursue his sister before she commits more dangerous crimes.  Clawmates come with him,  and he appreciates their help.  He, however, must face his family which terrifies him even more.
Guided Reading Level: X (6th grade)
-Borrowed from the library.