Chick Development

Day 1 - eyes begin to form

Day 2 - heart begins to beat

Day 5 - formation of reproductive organs

Day 8 - feathers begin forming

Day 10 - beak starts to harden

Day 12 -toes fully formed

Day 14 - embryo turns head toward blunt end of egg

Day 15 - small intestines taken into body

Day 16 - fully covered with feathers

Day 18 - growth nearly complete

Day 19 - yolk sac drawn into body

Day 20 - embryo becomes chick and starts breathing air in air cell of egg

Day 21 - chick hatches