Animal Life in Groups (Animal Behavior) by Toney Allman PDF

By Toney Allman

ISBN-10: 160413142X

ISBN-13: 9781604131420

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Many darting fi sh distract a predator from being able to single out one to eat. 52 AnimAl life in groupS group of untrained but hungry fish. When the hungry, trained fish swam to the right spot in the tank, all the untrained shiners followed close behind. They did this even when there was no food in the tank. The trained fish were the leaders that the other shoal members followed. Some scientists believe that hungry fish swim more purposefully than others. This causes other hungry fish to follow them.

Reebs that showed that fish can follow leaders and learn from them. In 2000, Reebs taught 12 shiners to come to a certain place in his large fish tank for food. Once the fish learned where they could expect to be fed, Reebs split them up. He placed one, two, or three trained fish with a These minnows in a lake are swimming in different directions—an action which works as a defense against predators. Many darting fi sh distract a predator from being able to single out one to eat. 52 AnimAl life in groupS group of untrained but hungry fish.

The thousands of daily births make it easy for predators to fi nd calves. Nevertheless, scientists have discovered that wildebeest are safer in a herd than they are alone. Wildebeest are large antelopes. 4 meters) tall and weigh up to 600 pounds (272 kilograms). Such a big animal cannot hide from predators, especially on a treeless plain. In a large group, however, each animal can “hide” by being surrounded by thousands of others. Hundreds of thousands of animals are visually confusing. Usually, only the stragglers are in danger.

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Animal Life in Groups (Animal Behavior) by Toney Allman

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