Mission name: Fly the Coop.
Mission rank: D. (Non-Repeatable)
Objective: Construct Communication Outpost.
Location: Kumogakure no Sato - Sky Bar.
Reward: 150 Ryo.
Mission Description: You've been contracted by an individual to build a messenger bird's landing post for his organization. It's simple - construct or place an existing birdhouse in the busiest parts of town, that messages can flow freely in and out to whoever might need to send them or receive them.
Mission Details: The birds. THE BIRDS.

They're territorial, and they will peck at you relentlessly. Don't kill them, they're someone else's property.