% 



BREEDING RANGE 

 WINTER RANGE 



Figure 12. — Distribution and migration of the redstart. An example 

 of a wide migration route, since birds of this species cross all parts 

 of the Gulf of Mexico, or may travel from Florida to Cuba and through 

 the Bahamas. Their route thus has an east-and-west width of more 

 than 2,000 miles. For migration paths of greater or less extent see 

 figures 9, 10, and 11. 



upon analyses of the several thousand records of the recovery of migra- 

 tory w^aterfowl then available, was announced by the Biological Survey 

 (Lincoln, 1935c) and, beginning in 1948, it has served as the basis for 

 administrative action by the Fish and Wildlife Service in the annual 

 hunting regulations. 



Although this study was confined to this one family of birds there 

 is a growing mass of evidence in support of the belief that all popula- 



47 



