Chimpanzees In Context A Comparative Perspective On Chimpanzee Behavior Cognition Conservation And Welfare Jane Goodall by Jane Goodall, Lydia M. Hopper (editor), Stephen R. Ross (editor) 9780226727981, 022672798X instant download after payment.

To really understand the complex life cycle and social behavior of chimpanzees, you need time. Chimpanzees, like the other great apes (bonobos, gorillas, orangutans, and humans), mature very slowly— infants continue to share their mother’s nest, ride her back, and suckle (though less frequently) until about five years old when the next offspring is often born, and even then
they remain emotionally connected to their mother, traveling with her for several years, strengthening family bonds that may persist throughout life. A female will not have her first infant until she is between 10 and 13 years old, and, like humans and other great apes, she has a long gestation period (about 8 months for chimpanzees). And there is an interval averaging five years between births. Chimpanzees can live to be over 50 years in the wild (and up to 70 years in captivity). As a result of this long life, and the fact that each individual has his or her own distinct personality, any worthwhile behavioral study of chimpanzees must be long term and must concentrate on individual life histories.