What's happening inside the eggs in Anglesea at the Alcoa plant?
We left the embryo at day 14.
Day 15:
* Claws begin to form.
* The cere is visible.
* Pterylae visible on the sternum
* Flight feathers appear.
* Feather tracts appear over the sternum.
* Lower eyelids develop.
* Embryo is moving
* Thyroid gland starts Thyroxine secretion
* Embryo moves to a position on the right of the egg
* Legs and torso grow faster than gead
* Embryo sinks because of that into the yolk
Day 16
* The toe claws begin to curve downward.
* The bottom of the feet become padded.
* Feather germs on the back and tail appear as long, tapering cones.
* The beak begins to harden.
* The comb appears serrated.
* The embryo begins to draw calcium from the eggshell for its growing
bones.
Day 17 & 18
* Scales appear on the lower legs.
* The embryo continues to grow and move.
* The ribs begin to ossify.
* Metanephros starts its function
* The Furcula is formed by the fusion of the 2 clavicles
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