Yurika

Yurika is a Konoha decoder-nin. At the start of Part II, her team received a message from Takamaru, Sunagakure's fastest messenger bird, that Gaara, the Fifth Kazekage, had been kidnapped by Akatsuki members Sasori and Deidara. Yurika decoded and informed Tsunade of the news, making the Hokage send Team Kakashi on a rescue mission to save Gaara.

Trivia

 * In the manga, Yurika told Tsunade herself about Gaara's kidnapping, while in the anime, she handed her the message to read it.