I have come to own a sun conure that is approximately 5 yrs old. she has a few specific behaviours that I am unsure of. the meaning of. she is a sweet and gentle girl who gives such gentle kisses most of the time , whether asked for or not.
sometimes she will take a finger tip gently in her beak and shake it

quickly...what does that mean? also she sometimes holds her head sideways and bobs sideways. what does that mean ? I have a variety of birds and her behaviours, while entertaining, are also cutely befuddling.