22 Wood, Autumn Warbler Hunting. [jan* 



solitarius) was taken September 28 and October 5, and last seen 

 on October S. The Philadelphia Vireo (V. philadelphicus) was 

 taken September 3, 10 and 24. They were most abundant on 

 the 7th, when five were seen. The last Rose-breasted Grosbeak 

 (Zamelodia ludoviciana) and the Whip-poor-will (Antrostomus 

 vociferus) were noted on October 5, and the Yellow-billed Cuckoo 

 (Coccyzus americanus) October 8; but these birds may have re- 

 mained later, as I looked for nothing except warblers. 



The general direction of warbler migration was west to east 

 until about September 20; then the reverse till October 5, and 

 due south after that date. The earlier birds were not in a hurry 

 and preferred to follow the chain of woods, but the southward 

 impulse seemed so strong in the late ones that they disregarded 

 convenience and pleasure. At no time did the wind tend to check 

 the migratory movement although, like other birds, the warblers 

 are averse to flying with it. On such days they merely traveled 

 low and, after leaving the woods, took short flights, while at other 

 times they usually crossed the open country without a stop. 



Yellow Warbler (Dendroica cestiva). — On July 161 noted a large 

 company of adult females and junior birds traveling through the 

 tree tops in the heavy timber; the course they were taking was 

 close to S. 26° W. Only adult males were seen after late July, 

 and they became scarce about August 10. 



Tennessee Warbler (Helminthophila peregrina). — This war- 

 bler does not take the same route every autumn, nor for that matter 

 every spring. Not even a straggler was seen in 1904, but it was 

 the most common species this season from August 24 to September 

 10, when the Black-poll took the lead to September 24, and was 

 replaced by the Myrtle Warbler from that date on. Both the 

 Mourning Warbler (Geothlypis Philadelphia) and the Nashville 

 Warbler (Helminthophila rubricapilla) were met with in 1904. 



Black-throated Blue Warbler (Dendroica ccerulescens). — Single 

 birds were more often met with than of any other species, and no 

 other exhibited an equal amount of curiosity. One actually came 

 down from the top of a tall elm to inspect me. This species was 

 one of the few exceptions where only adult males were noted on 

 the day of its first appearance. The October 15 birds were of 

 both sexes and all ages, but the two later records were adult females. 



