lo THE MIGRATIONS OF BIRDS 



valuable information. Wallace and Newton in turn 

 wrote upon migration, followed by Charles Dixon, 

 and by W. E. Clarke whose two volumes' sum- 

 marize observations begun as a member of a special 

 committee on Bird Migration, of the British Asso- 

 ciation for the Advancement of Science, and con- 

 tinued at length after preparation of the reports that 

 cover the voluminous data assembled by that com- 

 mittee. The Hungarian, German, French, and a 

 number of other ornithological organizations have 

 been responsible for cooperative efforts leading to 

 the assembling of much information, which has been 

 published in a long series of papers. 



The phenomena of bird migration were so evi- 

 dent to early colonists on the eastern coasts of 

 North xAmerica that notes on the movements of 

 birds found a natural place in many accounts that 

 touch on the indigenous life of the region. Water- 

 fowl swarmed in rivers and marshes in such numbers 

 that their migratory movements forced themselves 

 on attention, aside from the regular appearance and 

 disappearance of smaller birds that came in friendly 

 fashion about the crude homes of the pioneers. There 

 were in addition, in those days, great flights of the 

 passenger pigeon, which illustrated migration move- 

 ment of maximum magnitude. 



Data on the migration of North American birds 



* Studies in Bird Migration. London, 191 2, 1 vols. 



