La réponse est
yes.
Of course, head shaking is not always related to a bird listening to a word or phrase. It may be
a sign of an ear infection, sinus infection, eye infection or even an infection of the oropharynx (mouth area), choana or crop. If the head-shaking involves the bird slinging mucus or food, then the bird should be taken immediately to an avian veterinarian for examination to determine the reason, or if the head-shaking doesn't relate to a learning session, the bird should also be examined.
http://www.exoticpetvet.net/avian/strange.html
dans
Strange Facts You Probably Don't Know About Birds
dans Avian