Chicken makes a sound and shaking head

[Newchickenmamaa]

Hi, my chicken is making an odd like balking sound also with shaking her head. A few times she’s had her mouth open. Out of no where I heard the sound and went over to check on her and I’m not sure what’s wrong. She kept making the sound and shaking her head quite a few times then has layer down. She has gotten up to walk a little then went back to laying down. Does anyone have any ideas on what it could be and how to help her? Thank you in advance.

 

[nuthatched]

Could it be coughing or sneezing?