Kakariki leaning side to side

[Rikis]

Hi all, I was hoping I could maybe find an answer here on why my kakariki leans from one leg on the other sometimes, like a mini dance. She does this at night too, she's done it since a few months old (is now 1 year). Diet is quality seeds, veggies, greens, fruit (i noticed when she gets more veggies she does that more often). Any idea or help is welcome.