Sora

Sora

そら
Sora is a crow Misuzu befriends as a pet before she meets Yukito Kunisaki on the same day. Though Sora mostly appears as a minor character it has some important appearances, such as discovering Yukito's missing puppet or pulling Misuzu's toy dinosaur to the shrine. Sora's true nature is revealed at the very end of the series.

(Source: Wikipedia)