6day old chicks head twitching???? Anyone experience this before???

[Yardfarm Family]

4 of my 6day old chicks heads are twitching. If anyone knows why, please share. I'm worried! They seem to be well otherwise and I am a first time motherhen and don't know if this is normal.

 

[Sarahej]

I don't know. I am new too. They were fairly clumsy, fell asleep standing up etc...Maybe it is normal. Have you looked online? good luck