SOME FAMOUS BIRD TRAVELERS 



North Atlantic coast but from August to early 

 October it is not uncommon there. 



How can we explain these double migration 

 routes in which a bird goes south one way and 

 returns another? 



Here there is no gradual advancing followed 

 by retracing of steps, generation after generation, 

 as there has been, for example, with the Bobo- 

 link. These birds never go back by the route 

 over which they came, and how they have 

 learned either to go or come I am sure I do not 

 know. 



THE WORLD'S CHAMPION MIGRANT 



What Professor Cooke well calls the "world's 

 migration champion" is the Arctic Tern. This 

 bird looks much like the common Tern which 

 was so nearly exterminated by milliners' col- 

 lectors not many years ago, but, thanks to pro- 

 tection on its nesting grounds, is now becoming 

 more numerous. 



The Arctic Tern nests from the coast of Maine 

 northward to the very northern limit of land and 

 in 



