Kathryn Smithyman

Although there are over 9,000 species of birds in the world, each develops from a single-celled egg, is incubated, hatches, and grows to adulthood. Some bird life cycles involve migration. The Life Cycle of a Bird focuses on the various stages and explains:
• differences in the length of time birds incubate their eggs and care for their young
• the development of a chicken embryo and how a chick hatches
• dangers to nesting habitats, the effects of pollution, and how these affect the life cycle of birds

Additional Information

Frogs begin their lives as tiny tadpoles living in water. As adults, they live both on land and in the water. The Life Cycle of a Frog details the changes in a frog at the four stages: egg, tadpole, froglet, and adult. Illustrations, photographs, and easy-to-read text explain:
• facts about how the frog breathes and eats at each stage
• differences in the metamorphosis of frogs in southern and northern climates
• dangers to frogs from pollution, pesticides, and destruction of habitat

The Life Cycle of a Tree follows the growth of a tree from the time it sprouts to the time it is mature and capable of producing new seeds. The complex lives of these everyday plants will startle and delight young readers. Stunning photographs and illustrations accompany clear explanations of:
• how seeds are produced
• how different types of seeds look
• the role of various trees in a forest
• how trees benefit animals, people, and the environment
• how children can help trees in their neighborhood and around the world