46 



PROCEEDINGS OP THE 



In computing the averages for the ten years it is interesting 

 to see how closely the average of ' ' bulk arrivals ' ' reckoned as 

 explained above, coincide with the average of first arrivals at 

 stations where we have had a number of accurate observers. 

 Considering nine common species which are most likely to be 

 seen as soon as they arrive and which are least likely to be mis- 

 identified, we have tabulated the arrivals at ten stations as re- 

 ported by twenty-two observers for from nine to eleven years, 

 1901-1911. The detailed tabulation for the Brown Thrasher is 

 as follows: 



BROWN THRASHER 









1901-] 



1911 









Beverly and 

















Rancocas. 



Moorestown. 



Swarthmore. 



Lansdowne. 



Media. 





April 



22 



April 



28 





— 





April 28 



u 



22 







22 



April 



24 





" 24 



(( 



5 







20 





29 



April 29 



u 17 



u 



17 







24 





11 



'' 23 



" 22 



(( 



22 







24 





22 



" 14 



'' 22 



May 



1 







27 





29 



" 29 



" 26 



April 



28 







27 





26 



'' 26 



" 12 



(( 



14 







17 





19 



" 19 



" 18 



u 



18 







15 





22 



" 18 



" 18 



11 



22 







14 





19 



'' 15 



" 26 



li 



28 







27 





14 



" 24 



April 21 



April 



20 



April 



22 



April 



22 



April 22 



Ardmore and 







Kmnett 



Concord- 



George 



Haverford. 



Westtown. 



Square. 



ville. 



School. 



April 26 





— 





— 





— 





" 24 



April 



28 



April 



27 



April 



25 



April 22 



May 3 





19 







27 





20 



May 3 



April 15 





19 







25 





18 



April 24 



u 14 





11 







27 





11 



" 22 



" 28 





25 







15 





19 



" 16 



" 26 





26 







26 





26 



'' 26 



" 10 





— 







20 





13 



" 19 



u 17 





19 







28 





16 



" 24 



" 21 





24 







17 





19 



'' — 



" 28 





24 







19 





19 



" 27 



April 22 



April 



22 



Ap 



ril 



23 



April 



19 



April 24 



