Scornet Maestro

The Scornet Maestro is a boss in Pikmin 3 found in the Twilight River, and is the fourth major boss encountered in Story Mode. It quickly abducts Louie before the player can reach him. It seems to be like a queen bee of sorts, since it's able to command a swarm of Scornets using its harp-like beak. The Scornet retinue is used to attack the Captains and their Pikmin. It relies heavily on the Scornets as the Scornet Maestro itself has no way attacking.

It cannot be attacked while its swarm is surrounding it, requiring the Captains to aim their Pikmin (preferably Winged Pikmin) at the boss after it exposes itself after one of its coordinated attacks. Once defeated, the Scornet Maestro will drop a Seed Hive and Louie, and all 100 of the Scornets it commanded will be able to be carried as well.