THE OQLOQIST 



169 



Two "Possible MiQ-Rft-noiH T\ootes OF 



THE Olive -Backed Thku5h: — 



Ti2>4-. 



AftROWi. RePRESEKT RouTEi) Of l^iGR'VTlOK. 



Dotted areaj Winter 



l^AWGit Of SPEC'tS. 

 Two possible routes of Olive Backed Thrush Migration. Drawing by R. G. Howea. 



