Can you believe it?
We're on day six!
Please read
this article
On development of chicks!
Day 6
Hours 120 to 144
The dark spot on the embryo is the eye, you can just make it out.
The beak has begun to form. The vitelline membrane continues to grow and is now surrounding more than half the yolk. Fissura (small clefts) form between the second and third fingers of the lower limbs, and between the first, second and third fingers of the upper limbs. The eye is much more prominent, as are the heart and brain. Voluntary movement begins; the embryo can now move at will.