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OverviewAges 6 to 12 years. 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 book 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. Full Product DetailsAuthor: Kathryn Smithyman , Bobbie KalmanPublisher: Crabtree Publishing Co,Canada Imprint: Crabtree Publishing Co,Canada Dimensions: Width: 21.50cm , Height: 0.80cm , Length: 24.00cm Weight: 0.349kg ISBN: 9780778706540ISBN 10: 0778706540 Pages: 32 Publication Date: 20 October 2001 Recommended Age: From 8 to 9 years Audience: Primary & secondary/elementary & high school , Educational: Primary & Secondary Format: Hardback Publisher's Status: Unknown Availability: Out of stock ![]() Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |