Vo1 ' i9?o S ' V11 ] Averill, Migration and Physical Proportions. 



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in size. It is evident from this table and the preceding that the 

 important features are wing and tail. The increase in wing length 

 is mostly in the primaries so that the long wing is a pointed wing 

 as in the Connecticut and Kentucky, and the short wing is a round 

 wing as in the Yellow-throat. With the round wing goes the 

 round tail while the long wing accompanies the even tail. 



Oporornis and Geothlypis. 



Yellow-throats. 



