I I (S Bird Migration. [January 



Atlantic District (New York [excepting Long Island], Pennsylva- 

 nia, New Jersey, Delaware, Maryland, Virginia, North Carolina, South 

 Carolina), Supt., Dr. A. K. Fisher, Sing Sing, New York. 



Long Island, New York, Supt., William Dutcher, 231 West 128th St., 

 New York City. 



Middle-eastern District (Southern Michigan, Indiana, Ohio, West 

 Virginia, Kentucky and Tennessee east of the Tennessee River, Alabama. 

 Georgia, Florida), Supt., Dr. J. M. Wheaton, Columbus, Ohio. 



Mississippi Valley District (Dakota. Minnesota, Wisconsin, North- 

 ern Peninsula of Michigan, Nebraska, Iowa, Illinois, Kansas. Missouri, 

 Indian Territory, Arkansas, the small portions of Kentucky and Tennes- 

 see wesi of the Tennessee River, Texas, Louisiana, Mississippi), Supt., 

 Prof. W. W. Cooke. Moorhead, Minnesota. 



Rocky Mountain District (Idaho, Montana, Wyoming, Utah, Colo- 

 rado. Arizona, New Mexico), Supt., Dr. Edgar A. Mearns, Camp Verde, 

 Arizona. 



Pacific District (Washington, Oregon, California, Nevada), Supt., 

 L. Belding, Stockton, California. 



Light-house Division of North America, Supt., Dr. C. Hart Mer- 

 riam. Locust Grove, New York. 



Light-house Division of Spanish America, Supt., L. S. Foster, 35 

 Pine Street, New York City. 



Instructions to Collaborators. 



The Committee particularly desires from each observer a brief 

 but careful description of tin' principal physical features, including 

 latitude, longitude, aud altitude, of the locality which is the seat 

 of his observations. 



The data collected may conveniently be arranged in three gen- 

 eral classes: a. Ornithological Phenomena, h. Meteorological 

 Phenomena, c. Contemporary and Correlative Phenomena. 



(a) Ornithological Phenomena. 



Each observer is requested to prepare, at his earliest conven- 

 ience, a complete list of the birds known to occur in the vicinity 

 of his Station, and to indicate (by the abbreviations enclosed in 

 parentheses) to which of the following five categories each species 

 pertains : — 



1. Permanent Residents, or those that are found regularly 

 throughout the year (R). 



2. Winter Visitants, or those that occur only during the winter 

 season, passing north in the spring (WV). 



3. Transient Visitants, or those that occur only during the 

 migrations, in spring and fall (TV). 



4. Summer Residents, or those that are known to breed, but 

 which depart southward before winter (SR). 



5. Accidental Visitants, or stragglers from remote districts 

 (AV). 



It is desirable also to indicate the relative abundance of the dif- 

 ferent species, the terms to be employed for this purpose being : 

 Abundant, Common, Tolerably Common, Rare. 



