THE TRAVELS OF BIRDS 



BIRDS AS TRAVELERS 



BIRDS are the greatest travelers in the 

 world. Some other animals also make 

 long journeys. The fur-bearing seals that pass 

 the summer on the Pribilof Islands in Bering 

 Sea go as far south as southern California in 

 the winter. The caribou, or reindeer of the Bar- 

 ren Grounds which border the Arctic Ocean, 

 travel southward in the fall to find food and 

 shelter in the spruce and balsam forests of the 

 interior of British America. 



Shad and salmon leave the sea and swim often 

 hundreds of miles up rivers to lay their eggs. 

 Certain locusts, which are called "grasshoppers," 

 and some butterflies go long distances. But not 



