Blastoderm

Chalazae

Yolk

Albumen (Egg White)

Diagram of a Fertile Unincubated Egg

Fertile Unincubated Egg

Infertile Unincubated Egg

1 Day of Incubation

INFERTILE EGG ---

PRESENCE OF THEDAY OLD EMBRYO

FERTILE EGG ----

Day 1 As seen by

candling

2ND DAYHEART BEGINS BEATING

3RD DAY

3RD DAY AS SEEN BY CANDLING

4TH DAY

5TH DAY

•LIMBS BEGIN TO BEND FOR ELBOWS AND KNEES•FACE AND NASAL PARTS TAKE SHAPE

5TH DAY

LIVE EMBRYO

DEAD EMBRYO

INFERTILE EGG

6TH DAY

7TH DAY

•EGG TOOTH•BEAK•VOLUNTARY MOVEMENT

8TH DAY

•TOES•FEET AND WINGS WELL DEVELOPED•FEATHER FOLLICLES BEGIN TO DEVELOP

9TH DAY

EGG TOOTH ENLARGES

10TH DAY

•DOWN FEATHERS IN TAIL AREA•TOES AND WING FINGERS

11TH DAY

12TH DAY

MOST OF THE DEVELOPMENT HAS OCCURED

13TH DAY

•COMB AND WATTLE APPEAR•RAPID GROWTH OCCURS NEXT 3 DAYS

14TH DAY

HEAD TURNS TOWARDSBLUNT END OF THE EGG

15TH DAY

16TH DAY

SCALES TOENAILS AND BEAK BECOME HARD

17TH DAY

THE NECK AQUIRES A DOUBLE BEND SO THE HEAD IS UNDER THE RIGHT WING

18TH DAY

18TH DAY SEEN BY CANDLING

AIR SAC ENLARGES TO NEARLY 1/3 THE EGG

19TH DAY

20TH DAY

BEAK PIERCES THE AIR SACLUNGS BEGIN TO FUNCTION

20TH DAY AS SEEN BY CANDLING

BEAK PIERCES AIR SACPEEPING BEGINS

21ST DAY

THE CHICK “PIPS” AN OPENING IN THE LARGE ENDIN A COUNTER CLOCKWISE DIRECTION

THE END CAP IS REMOVED

CHICK HATCHING

NEWLY HATCHED CHICK

THE CHICK MUST LEARN TO USE ITS MUSCLES

1 DAY AFTER HATCH