Dancing chickens?

[ChickenMama1018]

I was outside with my free range girls yesterday and I noticed 2 of them doing this weird “swirl” with their necks. It almost looked like they were dancing or head bobbing! It was relatively cool outside yesterday (60 degrees/sunny).

Anyone know what or why they do this?

 

[Chick-N-Fun]

Sounds like they are doing a Happy Dance, Like my avatar!

 

[Chickamams]

I’m trying to teach mine to dance to Staying Alive. Good pandemic song. But so far they just stare at me dancing...

 

[aart]

If you really want to know a video would help.
Could be predator scanning, crop adjustment, or a neurological issue.