How do migrating animals find their destination? They navigate in a variety of ways. Fish use their
sense of smell to recognize their migration paths and are guided by changing water
temperatures.
Birds use the position of the sun to orient themselves. Some birds have magnetic particles
in their ear mechanisms that act as a compass. Mammals rely on their memory. Some
elephant trails have been used for hundreds of years.
Source: Adapted from The Complete Book of Questions and Answers, Columbus, OH: American Education Publishing, 2002, p. 120.
The implied main idea is:
Mammals rely on their memory.
How do migrating animals find their way?
Fish and birds have special methods for finding their way.
O Migrating animals navigate in a variety of ways.