Have you ever wondered how chicken forms or how the egg turns into chicken?.
The processes of chicken embryo development are not conspicuous for a farmer to witness from simple observation. Quite amazingly, an egg with no sign of a chicken in its yolk gradually develops head, legs, wings and all.
This video illustration by Poultry CRC takes you through the amazing 21 days development of a fertile chicken egg. This is the clearest and most elaborate visual display of how the egg turns into a chicken.