THE OOLOGIST 163 



Ml<WTlON OF OLIVS ~ BACK.EH THR.USH. 1^ *, &. 

 September 5~^ \y\2> 

 Conditions: We a-lner Clear. Temperature 7cL°. SwornSkr 3o.io Iixchcs. 



Tis i 



'Birds WH»CK Massed THrougH Given. A yea Of -SK^, 



IB^txee^ s A.nv and 7 a.m. 



Migration of Olive Backed Thrush Sept. 5, 1912. Drawing by P. C. Howes. 



