BIRD RECORDS 



195 



It will be observed that the fall movement may be treated in 

 the same manner, and be compiled by inspection of the Field 

 Records. The first date may indicate the time of marked diminu- 

 tion, or conspicuous flocking, and the second that of the dis- 

 appearance of the belated stragglers. 



It is admitted, assuredly, that records kept in this fashion 

 demand constant field work throughout the migration period. 

 It is particularly difficult to carry on the work in the fall when 

 change of plumage, and silent passage characterizes the tran- 

 sients. With permanent residents the case is but slightly different 



Genus 



Species 



Common name 



since so many betake themselves to the thickets and are likely 

 to escape detection. However, knowledge of their habits will 

 enable one to note marked decrease in numbers, and thus detect 

 the beginning or the end of the local migration. 



To emphasize the need of more careful and well directed and 

 organized efforts in making records may serve as the closing 

 thought. Constancy and earnestness are required to carry them 

 on as we have suggested but by as much as the effort needed 

 excells that of the ordinary casual way, so docs the result 

 transcend in value that usually attained. 



