But physically your 'chickens in process' are not chickens, they are eggs, right?
If I asked you to draw an egg, what would you draw?
If I asked you to draw a chicken, what would you draw?
You are too tied up in superficial and transient external characteristics.
If I asked you to draw a newborn baby chick what would you draw?
If I asked you to draw an adult rooster what would you draw?
These look nothing like each other but they are just stages of development of the same creation. The same is true of the embryo.
Embryo:
Chick:
Adult:
