Vol. XXIIT Cooke, Routes of Bird Migration. 7 



1905 J J a , 



across the West Indies, and it is equally probable that the indi- 

 viduals from the Mississippi Valley cross the Gulf of Mexico and 

 reach South America by way of Central America. The Wilson 

 Thrush {Hylocichla fuscescens) is unknown in migration east or 

 west of a narrow belt extending north and south between central 

 Cuba and Yucatan and thence southeast to South America. 



There remain the following eleven wide-ranging species that 

 winter both in the West Indies and in Central America and pass 

 south to South America or to Panama. 



Painted Bunting {Cyanospiza ciris). 



Yellow-throated Vireo ( Vireo favifrous). 



Black and White Warbler {Mniotilta varia). 



Worm-eating Warbler (Ilclmitheros vertnivorus). 



Myrtle Warbler (Dendroica coronata). 



Oven-bird (Seiurus aurocapillus). 



Water-Thrush (Seiurus noveboracensis). 



Louisiana Water-Thrush (Seiurus motacilla). 



Northern Yellow-throat (Geotklypis triclias brachidactyla). 



American Redstart (Setophaga ruticilla). 



Catbird (Galeoscoptrs carolinensis). 



The above tables may be recapitulated as follows : 



Species from the Eastern United States that range to South 

 America or Panama. 



That cross from Florida to Yucatan ...... 16 



That cross the Gulf of Mexico on their way from the Southeastern 



United States to Central America 22 



That cross the West Indies ........ 10 



Whose migration route is unknown or not classified ... 7 



Wide-ranging species . . . . . . • • • 11 



Total • 66 



The above summary makes clear the facts that the large major- 

 ity of land birds from the eastern United States bound for South 

 America, cross the Gulf of Mexico in preference to journeying via 

 the West Indies or by Florida and Cuba; and that hardly a sixth 

 of these species are known to reach South America across the West 

 Indies. It is believed that the facts here presented justify the 

 statement : " The main traveled highway is that which stretches 



