■:,^~\- 



n 



• Breeding 



if Winter 



■ Recovery Point 



A Migration Record 



Figure 8. — Distribution and migration of the arctic terns of eastern North 

 America. The route indicated for this bird is unique, as no other 

 species is known to breed abundantly in North America and to cross 

 the Atlantic Ocean to and from the Old World. The extreme summer 

 and winter homes are 1 1,000 miles apart, and as the route taken is 

 circuitous, these terns probably fly at least 25,000 miles each year. 



39 



