1. How are birds adapted for reproduction?
A close look at the chicken egg

2. Birds What you know: Fertilization occurs … INTERNALLY
Development occurs …
EXTERNALLY
(outside of mother’s body)
The avian egg contains everything that the
developing embryo needs
FOOD = Yolk
OXYGEN = Shell Pores
PROTECTION = Shell and Amniotic Fluid

3. Chicken Reproduction Hen x Rooster ↓ Fertilized Egg (embryo)
Hen x no Rooster
Unfertilized Egg
($2.19/dozen)
Position of Ovary in A Hen

4. Egg Formation Ovary produces Ovum surrounded by Yolk ↓ Infundibulum
(catches yolk)
Oviduct
Uterus
Vagina
Vent
Ovum with Shell
(24 hours after yolk released)

5. The Incredible Edible Egg

6. The Fertilized Egg

7. On Day 21…

8. And Now…
Watch Film
Take Notes
Answer Questions
Tomorrow…DISSECTION!!