Vol. XXII 

 1905 



Cooke, Routes of Bird Migration. 



Kingbird {Tyrannies tyrannus). 



Wood Pevvee (Contopus virens). 



Green-crested Flycatcher (Empidonax virescens). 



Orchard Oriole {Icterus spurius). 



Rose-breasted Grosbeak (Zamelodia ludoviciana). 



Blue Grosbeak (Guiraca ccerulea). 



Indigo Bunting (Cyauospiza cyanea). 



Dickcissel (Spiza americana). 



Purple Martin {Prague snbis). 



Red-eyed Vireo (Vireo olivaceus). 



Blue-headed Vireo (Vireo solitaries ). 



Yellow Warbler (Dendroica cestiva). 



Magnolia Warbler (Dendroica maculosa . 



Black-throated Green Warbler (Dendroica vitens). 



Hooded Warbler ( Wilsonia mitrata). 



Olive-backed Thrush [Hylocickla ustulata swainsoni). 



All of these sixteen species pass on south and southeast to 

 South America or proceed at least as far in that direction as 

 Panama. 



In addition to these, there are several other species that are 

 common in the eastern United States and migrate across the Gulf 

 of Mexico to Central America and continue to South America or 

 Panama, avoiding southern Florida and the West Indies, but at 

 the same time they are not yet known to occur both on the north- 

 eastern coast of the Gulf of Mexico and regularly in Yucatan, so 

 that they can be included in the preceding list. Their routes of 

 migration will be discussed later in this article. For the present 

 it is sufficient to enumerate them : 



Nighthawk (Chordeiles virginianus). 

 Crested Flycatcher (Myiarchus criniius). 

 Olive-sided Flycatcher (Nuttallornis borealis). 

 Yellow-bellied Flycatcher (Empidonax ftaviventris). 

 Alder Flycatcher {Empidonax trailli alnorum). 

 Least Flycatcher (Empidonax minimus). 

 Baltimore Oriole (Icterus galdula). 

 Scarlet Tanager (Piranga eryt&romelas). 

 Cliff Swallow (Petrochelidon lunifrons). 

 Philadelphia Vireo ( Vireo philadelphicus). 

 Prothonotary Warbler (Protonotaria citrea). 

 Blue-winged Warbler (Helminthopkila pinus). 

 Golden-winged Warbler (Helminthopkila c/nysoptera). 

 Tennessee Warbler (Helminthopkila feregrina). 



