DELAWARE VALLEY ORNITHOLOGICAL CLUB. 43 



Pennsylvania. 



Kennett Square, Charles J. Pennock. 



Concordville, Katherine R. and Elizabeth P. Styer. 



West Chester, Isaac G. Roberts. 



Westtown, George H. Hallett Jr. 



Swarthmore, Mary S. Pusey. 



Lansdowne, Friends School. 



Lansdowne, Louisa M. Jacob. 



Lansdowne, John D. Carter. 



Lansdowne, Edwin L. Nicholson. 



Media, Lydia G. Allen. 



Ardmore, Wm. L. Baily. 



Haverford, Wm. J. Serrill. 



Wayne, Mary K. Baker. 



Wayne, Leonard S. Pearson. 



Bryn Mawr, Emily H. Thomas. 



West Philadelphia, Leonard S. Pearson. 



West Philadelphia, Thomas R. Hill. 



Oak Lane, Samuel H. Barker. 



Holmesburg, Henry W. Fowler. 



Frankford, Richard F. Miller. 



George School, W. W. Swayne. 



Collegeville, Henry Fox. 



Doylestown, C. Russell Mason. 



Trevorton, Alexander Patman. 



Lopez, Otto Behr. 



The spring migration of 1911 was characterized by several 

 well-marked waves. Winter practically closed with the snow 

 storm of February 20th, which brought with it flocks of Horned 

 Larks, which were reported during the three following days at 

 various stations. Then came clear weather with a steady rise 

 of temperature, culminating with a maximum of 63° on the 

 26th, which brought a widespread movement of Grackles, Blue- 

 birds and Robins. Another marked rise in temperature, culmi- 

 nating on March 10, marked the first considerable arrival of Fox 

 Sparrows, Red-winged Blackbirds and Flickers. Another wave, 

 March 26-27, brought Phoebes, Cowbirds, Chipping and Field 

 Sparrows, and a decided and sudden increase in temperature, 



