Renowned ornithologist Tim Birkhead uses birds' eggs as wondrous portals into natural history, enlivened by the stories of naturalists and scientists, including Birkhead and his students, whose discoveries have advanced current scientific knowledge of reproduction.

Uses bird and bee cartoon characters to present straightforward explanations of topics related to sexual development, love, reproduction, adoption, sexually transmitted diseases, and more.

Answers some of the most common questions about sex and development.

Presents clear and age-appropriate information about reproduction, birth, and the difference between boys' and girls' bodies.

A sperm named Willy, his main rival Butch, and millions of other sperm take part in the Great Swimming Race to the body of Mrs. Browne.

Follows the adventures of young Gus and Nellie, who watch their mother's pregnancy and anticipate the arrival of a new sibling while learning engaging facts about how unborn babies develop.

Describes the mating rituals and reproductive methods of a variety of animals, including flatworms, jellyfish, chameleons, and walruses.

"Many plants catch your eye with their amazing colors and shapes. But plants also reproduce in amazing ways. From seeds to spores and pollination to fertilization, plant reproduction is anything but ordinary"--

Shows the actual conception and development of a baby. Looks inside the male and female reproductive organs to show the formation of sperm and the passage of a fertilized egg through the fallopian tube. Uses a microscope to observe DNA, chromosomes, and other minute body details building up to the moment of birth.

Introduces us to the most diverse group of animals ever to live on this planet. From the smallest to the largest, from the slowest to the fastest, from the least attractive to the most irresistible. Looks at 4,000 species, including ones that have outlived the dinosaurs and conquered the farthest places on Earth. Examine how their adaptations for finding food have had an effect on the way they socialize, mate and live.