It looks like convulsing, or like exaggerated dry heaves

[walterbyrd]

But I think she is getting something up.

I feel certain it is involuntary. She heaves for about ten seconds, then stops for about ten seconds, then starts again. It goes on for a few minutes. Afterwards, she is tired, but otherwise seems to be fine.

She has done this twice recently. Both times, first thing in the morning.

No change to her diet, or routine.

 

[Kiwibird]

She is likely regurgitating or adjusting her crop. Regurgitation is when they bring food up from the crop to feed young or (in the case of domestic birds) want to "feed" their favored human as a sign of affection. Crop adjustment is exactly what it sounds like, and it looks like a gigantic and prolong yawn. Both natural and normal

Has she otherwise been normal?

 

[Taw5106]

Buddy does that but he's adjusting his crop.

 

[Hawk]

Normal Behavior....crop adjustments, or wanting to cough up a delicious cookie (food)
that they save JUST for you..Because they love their human buddy and like to share...Yum yum....barf!

 

[walterbyrd]

Has she otherwise been normal?

Yes, but it is scary to watch.

Again: this behavior seems to be involuntary. For example, I open the door to her cage, and she tries to get out, but cannot stop heaving.

Seems like, if she was adjusting her crop, or regurgitating, she could stop whenever she wanted.

 

[Dinosrawr]

Does she have an fabrics or ropes that she chews on?