embryos

Traces, with the aid of photographs, the growth of a chick embryo from the laying of the egg to the chick's emergence from the shell.

The development of a chick embryo.

Text and photos focus on the behavior, pecking order, and egg production of the most numerous species of bird.

Photographs, drawings, and text on two different levels of difficulty follow the development of a chick embryo from the fertilization and laying of the egg to the time the chick hatches.

Photographic presentation of what happens inside the chicken egg during its twenty-one day incubation period.

Large illustrations and simple text describe what an egg is made of and how it hatches into a chicken.

Follows an egg from the time it is laid, through its incubation under the hen's body, to the chick's birth after twenty-one days.

Text and photographs trace the development of a chicken egg from the time it is laid until the chick is born.