GLOSSARY

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DETERMINATE LAYER
A bird that will not replace eggs removed from the nest. She lays a fixed number of eggs.
EGG
A chamber that provides nourishment and protection for the growth and development of the embryo inside it.
EGG TOOTH
A temporary tooth on the bill of a chick. It is used to help the hatchling break the shell.
ELLIPTICAL
refers to a shape like that of an ellipse or oval, with sides slightly compressed.
EMBRYO
The young bird, beginning with the earliest stage of development within the egg until it hatches.
ENDOCRINE GLAND
A gland that secretes hormones into the blood stream.