Do you have a best friend? I'm sure there is someone who makes you smile just to see him or her. And you know what, this best friend may not even be human! That is the case for a six-year-old boy named Roman in author Jay Fowler's Billy the Friendly Blue Bird. Billy is a treasured member of Roman's family. He helps Roman with his homework. They laugh, play and talk about life's adventures and they enjoy having fun together. Billy...