The Blue bird is a character from the Angry Birds game.
Counterparts:
James (Thomas and Friends)
Top Hat (TUGS/Salty's Lighthouse)
Foduck (Theodore Tugboat)
Emery (Chuggington)
Schemer (Shining Time Station)
Norval the Fish (Dr. Seuss)
Roy (Garfield and Friends)
Squidward Tentacles (SpongeBob SquarePants)
Drew Pickles (Rugrats)
Stuck-Up Steve (Horrid Henry)
Binky Barnes or Ed Crosswire (Arthur) (The former begins with "B")
Bert or Grover (Sesame Street) (The former begins with "B", The latter is blue)