Ultra-sun: Using psychokinesis gives it a headache, so it normally passes the time spacing out and doing as little as possible.Moon: This Pokémon is troubled by constant headaches. The more pain it’s in, the more powerful its psychokinesis becomes.Alpha-sapphire: If it uses its mysterious power, Psyduck can’t remember having done so. It apparently can’t form a memory of such an event because it goes into an altered state that is much like deep sleep.
Prof. Lotus' Notes: Despite the Psy- prefix in the name coming from Psychic, Psyduck is not a has no Psychic partial typing. I think this is a nod to how confused this Pokemon is. You heard it here first.