|You can't lose even a single Wee Birdee when carrying them to Big Birdee. Proceed very carefully. You can't help carrying them into battle, so fight cautiously.|
— Daroach, in Kirby Mass Attack
Wee Birdee is a baby Birdee, specifically a chick of Big Birdee, which appears in Kirby Mass Attack. There are six of them, and the Kirbys rescue them from the Gegs and carry them to their mother in Sandy Canyon - Stage 11. This done successfully, Big Birdee and most of the smaller Birdees become Kirby's allies, helping him throughout the rest of the game.
While holding a Wee Birdee, that Kirby is not allowed to be KO'd, or the stage will end in a loss.
Names in other languages
(portmanteau of the Japanese words for "small" - コ (Ko) and "bird" - とり/鳥/禽 (Tori))