Sticky Talon

Sticky Talons are large crows that steal Pit's special weapons, much like Plutons and Pluton Flies; unlike the Plutons, however, Sticky Talons can be killed. Pit can purchase stolen goods from a Black Marketeer. They can travel alone or in small groups and fly in wave-like patterns. They're only encountered in the Overworld.

Kid Icarus: Of Myths and Monsters
"Steals weapons that Pit is carrying, and sells them to the Black Market."

Trivia
They are similar to the Takuri bird enemy from The Legend of Zelda: Majora's Mask.