Crow (Enemy)

Crows (クロウリー, lit. "Crowley") of Hyrule are extremely hateful and will perch themselves on anything they can find. They are sometimes hard to defeat, as they swoop down at high speeds, but a slash of Link's sword will send them away.

In The Minish Cap, Crows behave in much the same way as in other games, but play a more prominent role. When Link visits Dampé, he received the gate key needed to open the door to the graveyard. When he exits the house, a Crow swoops down, steals the key, and retreats to its nest. Link travels to the nest and is able to destroy it and steal the key back.

Trivia
The mirror image in the Dark World of the crows are the Rhinobirds in A Link to the Past.