constant mouth opening

[Pokey]

My Amazon is constantly opening her mouth very wide. I do not know if it is a habit or she is trying to get air. She is very activ

 

[Clueless]

Is it like a yawn?

MC has done that before and I thought I read somewhere on here that they could be adjusting their crop. @Macawnutz does that sound correct?

 

[Hawk12237]

Could be stress, could be warm, even adjusting crop. Would be beneficial if we could see a picture or video.
Not much info to go on here. Is it all day? Certain times of the day? What your weather is like, is it hot? Does it have plenty of cool water?
Had it had a recent vet check up?

 

[Ripshod]

If she's stretching or twisting her neck at the same time then it's likely she's just adjusting her crop.