Chicken doing funny thing with head

[ilovmychicks]

One of my hens is very lethargic meaning she is just standing in one spot sometimes closing her eyes she is drinking water but she's doing something really funny with her head I've never seen her do this before what could this be???

 

[Yorkshire Coop]

Sorry to hear your hen is under the weather.

When you say something funny with her head, could you describe it please?