Warbler Flight in Missouri Valley 201 



numbers seemed greatly augmented during the few days of migra- 

 tion. 



8. Maryland Yellow-throat (Geothlypis t. trichas). — The form 

 found here is often referred to as G. t. hracMdactyla. It is a very 

 common summer resident, and was present this spring in about the 

 usual numbers. 



9. Grinnell Water-Thrush (Seiurus noveboracensis notahilis). — 

 A migrant. The Water-Thrushes were seen more frequently than 

 my records show, because it was often difficult at a distance to sat- 

 isfy one's self of fhe identity of this species from S. motacilla. I 

 suspect, however, that if circumstances ihad taken me more often 

 to its natural haunts it would have been found to be tolerably com- 

 mon. One of my records this year was obtained on the College 

 campus, several miles from the nearest water. 



10. Magnolia Warbler {Dendroica m-agnolia). — This species fur- 

 nished one of the surprises. On the basis of my own observations 

 I have considered this species rare in this region. This year, how- 

 ever, it must be credited with being abundant during the few days 

 of its passage. It was observed practically every day and was 

 well distributed. More inquiries were made about this little bird 

 than all the other warblers put together. 



11. Oven-bird (Seiurus aurocapijlus) . — This bird is considered a 

 common resident here by other observers, and I have been cha- 

 grined not to iiave seen it until this spring. However, one of my 

 records this season was made on the College campus, and another 

 in a private yard a few blocks laway. The other records were se- 

 cured in the fleldi where they might be expected. 



12. Blackburnian Warbler (Dendroica fusca). — ^This must be 

 rather a rare species for the Missouri valley. I have not before 

 come across it, and no record of its occurrence in western Iowa ap- 

 pears in Anderson's Birds of Iowa. Bruner, Walcott and Swenk 

 credit Aughey with having occasionally found it in eastern Ne- 

 braska. A few records of its occurrence in the lower Missouri val- 

 ley are given in Widman's Birds of Missouri (p. 229). I can add 

 a positive record for Sioux City, May 13, 1913. On the following 

 day Mr. Arthur Lindsey saw two on the College campus. 



13. Tennessee Warbler (Vermivora peregrina). — A regular and 

 abundant migrant. I believe that, from year to year, this warbler 

 will stand second only to the Yellow Warbler in abundance. Its 

 migration seems to cover a longer period than other members of 

 the family. 



14. Cape May Warbler (Dendroica tigrina). — It seems to be 

 generally agreed that this species is rather rare in most of the in- 

 terior, at least. Two records are published fi'om Nebraska, but 



