TAG behavior

by Zana
(San Diego)

My TAG, Pepper, is a 3yr old female I purchased from a local aviary a cpl months ago. Great bird. I am curious about her behavior, simply bc my IRN, and Amazon have never done this.

Pepper will put her head down, facing to the side... one eye pointed to the floor, the other eye pointed to the ceiling, but her head is less than 1/4 in off the ground. Then literally she will turn in circles.

As cute and funny as this is, I am also curious about what this could mean.

Her diet is all natural seed and dried food mix. She's also eating people food with the family at meal time, such as fruits, veggies, white meat, eggs grains. She's also got a supplment which is to be mixed with seed.

She gets more then 4 hrs out of her cage per day, with human interaction, if not most the day. Each day she is introduced to one new thing to stimulate her. She appears to be very healthy, very gentle, and content.

She does this randomly, without reason. Doesn't appear to be in pain,and has healthy appetite. She was very phobic when we brought her home from the aviary, as this was in fact her "first home". She appears to adapt to things within reason if not right away. She's still got slight phobia, but she's much better about most things.
4 people in the house interact with her. They've all witness her head tilting and circling.

None of us can find rhyme or reason as to why she does this. Any ideas?

(Pepper was properly "sexed" by our local aviary)