What does it mean though

[Ria.345]

I’ve attached a video of Cody doing this tongue thing. Idk quite how to describe it. He does it so often that I’ve lost count. Not just when he’s in front of the camera. Is it something distinct with cockatoos?

 

[Tikitiel]

Im not sure..
ive seen is multiple times i think it is something distinct to cockatoos
AGAIN im NOT SURE