One name leapt to my mind, but I doubt you would want to repeat it in mixed company...
Jacksons can be touchy, susceptible to stress... For example - a local pet store had a display cage of them up front. Someone brought in a B&G Macaw, to board there. From the back of the store, the screams of the Macaw stressed some of the Jacksons to the point that they pretty much dropped dead. The petstore owner was not amused.