Plaudagei

Diamond +2: It can learn and speak human words. If they gather, they all learn the same saying.

Pearl: It keeps rhythm by flicking its tail feathers like a metronome. It imitates human speech.

Platinum +4: Its tongue is just like a human’s. As a result, it can cleverly mimic human speech.

HeartGold +3: It mimics the cries of other Pokémon to trick them into thinking it’s one of them. This way they won’t attack it.

Legends: Arceus: A versatile performer skilled in the imitation of human speech. It is said that older, more experienced Chatot can even understand the meaning of the words they mimic.