Why does my kakariki do this?

My 1 and a half year old female kakariki has been doing this 'thing' quite a lot nowadays and idk why she does it (hormonal? Attention?) She does this mostly around others for instance she comes and sits next to me and then does this thing or when others are near she does it. She did it last year aswell and then stoppen and now she's doing it again and idk what it is. Any help is appreciated.