64 



Wright and Allen, Austral Birds at Ithaca. 



PAuk 

 LJan. 



in this spring's (1909) migration. For during the last ten years of 

 careful migration studies at Ithaca, no one phenomenon has arrested 

 more attention than this gradual extension of Austral birds into our 

 fauna. And inasmuch as there seems to be similar invasions 

 taking place elsewhere/ we thought it well to call attention to such 

 data as has been collected at Ithaca. 



Since 1850, the following Austral species have been recorded, 

 the accompanying list indicating the distribution and the number 

 of records or relative abundance of each form. 



1 Trotter, Spencer. The Geological and Geographical Relations of the Land-Bird 

 Fauna of Northeastern America. Auk, Vol. XXVI, July, 1909, pp. 221-233. 



Townsend, Chas. W. A Carohna Wien Invasion of New England. Auk, Vol. 

 XXVI, July, 1909, pp. 263-269. 



