Answer:
The five parts of a bird egg are as follows:
germ -- the spot the size of a pin head on the surface of the yolk.
yolk -- the yellow yolk is contained in a yolk sac.
white -- the white is called albumen and has 4 layers (thick white, thin white, inner thin white and the chalaza)
shell membranes -- the membranes allow water and gas to pass through. They separate to form the air sac.
shell -- the shell is made from calcium carbonate.