Star gazing is a neurological problem where the chick's head spasms backwards over it's back. Sometimes they flip over. Hence the term "star gazing" as if they are looking up at the sky. Silkie's are prone to this problem. Other times it's a deficiency of Vitamin B1 or Thiamine. If you're using "medicated" feed it contains Amprolium which blocks the absorption of Thiamin in the chicks body, the reason it's used is because Cocci feeds on Thiamine.
So for any of the chicks having this problem, drop the medicated feed if you're using it. Then give them additional Vitamin B1 in their water. I'm sorry I don't have an exact dosage but in the past we added Vit B1, Vit E and Selenium as all 3 work synergistically in the body -- we eyeballed the amount and had our chick looking better the next day. We continued treatment for a week and never saw it again.
Sometimes this type of thing happens if the parents' diet is lacking in Thiamine.
Hope you're able to cure them otherwise it's a life long condition. Do a search as there are tons of threads on star gazing.
