Page 94 - One Million Things: Animal Life - The Incredible Visual Guide
P. 94

LIFE HISTORIES                                                                       GOLDEN EAGLE
                                                                                            When a golden eagle chick hatches, like
                                                                                            many young birds, it is small and helpless.
                                                                                            For 10 weeks it remains in or near the nest,
       After it hatches from an egg or is born, an animal                                   dependent on its predator parents to feed
       grows and develops until it becomes a mature adult                                   it pieces of meat. When its wing feathers
       that can breed. Some young animals, including mammals,                               develop, the young eagle starts to fly and hunt.
       birds, and fish, bear a resemblance to their parents, and                            Once mature, males and females pair for life.
       their life histories simply involve growth to adult size.
       In contrast, the life history of animals such as insects                                                              1. The newly
       and amphibians involves a metamorphosis                                                                               hatched chick
       (transformation) through several distinct stages.                                                                     is covered with
                                                                                                                             white, downy
                                                                                                                              feathers.










                                                                                                                                2. After a few
                                                                                                                                weeks the
                                                                                                                                eagle chick
                                                                                                                                has grown
         COW                                                                                                                    rapidly on
       Mammals develop inside their mother’s body,                                                                              a diet of
       are born, and then feed on her milk. Cattle and                                                                           fresh meat.
       horses are born well developed, getting to their
       feet soon after birth. They grow and develop over
       the following years until they, too, can breed. Other
       mammals, such as foxes and mice, are born blind
       and helpless. They need constant parental care,
       and change shape as they grow.



                                                                                            3. The young
                                                                                           eagle is almost
                                                                                             ready to fly.
                                                                                              The parent
                                                                                               ignores its
                                              Cow stays                                         offspring
                                              close to her                                      begging
                                              offspring                                          for food.

                                                              Calf is a
                                                              smaller
                                                              version of
                                                              its parent
                                                                                               4. The eagle
                                                                                               has reached
                                                                                              maturity and
                                                                                                can fly and
                                                                                                  hunt for
                                                                                                     food.
















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                                                                                                                                     12/1/09   12:43:50
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