FLIGHT: The Genius of Birds (Part 3) - Embryonic Development

Is the development process of bird embryo a highly engineered biological process, or simply a chaotic collision or molecular components?

In this sequence from Illustra Media's newest documentary FLIGHT: THE GENIUS OF BIRDS you will enter a fertilized egg to witness a bird's embryonic development. Spectacular animation and live action footage document the extraordinary 21-day process of organization and growth from a few cells into a chicken.