138 THE WILSON BULLETIN — September, 1921 



stream in Custer or Dawson Counties, in June, 1875. Bruner noted 

 it along the Dismal River in Thomas County, and in 1911 Zimmer 

 found it in the shrubbery along the Loup River in the same county, 

 August 21 to 28, collecting a male on the first date (Proc. N. 0. U., 

 V, p. 81). The eastern limits of its normal breeding i-ange are not 

 well fixed. 



Yellow-bellied Flycatcher hhttpidoiHi.r t1(iviv< iitrifi (W. M. & S. F. 

 Baird. 



This retiring and self-effacing inhabitant of heavily shaded and 

 excessively moist woods occurs in Nebraska only as a rare migrant 

 east of the 97th meridian. In 1877 Aughey stated that this species 

 occurred " sparingly in eastern Nebraska,"' and that he had known 

 it " to breed on the skirts of timber belts along the Missouri River." 

 He also mentions taking a specimen at Dakota City, Nebraska, in 

 July. 1870. But, as E. flavivcntris is rather strictly a Canadian 

 zone species, and breeds in situations quite different from the hab- 

 itat in which Aughey thought he found it nesting, he was probably 

 in error in his identification of the bii-d. Very likely he found 

 E. virrsceus instead, especially as he does not mention that species 

 in his list. One might also fairly assume that his July specimen 

 from Dakota City was likewise E. vircscens. 



L. Bruner has noted E. flavivcntris as a migrant once each at 

 both Lincoln and West Point, and Zimmer has recorded a speci- 

 men that was thoroughly identified by himself and R. H. Wolcott 

 at Roca May 21, 1910 {Proc. N. 0. U., v, p. 35), but no specimens 

 taken in Nebraska have been examined. 



(Empidonax difficilis difficilis Baird, the Western Flycatcher, 

 which represents E. flavivcntris in the West, and breeds in Wyom- 

 ing and Colorado from 10,000 feet elevation to the plains, as well 

 as in the Black Hills region of South Dakota, will very likely be 

 found t(i occur in northwestern Nebraska during migration.) 



Acadian Flycatcher Eynpidona.v vircscens (Vieillot). 



Confined during the breeding season to deep and shady wood-, 

 lands, this flycatcher is to be found nesting only along the Missouri 

 River and the more heavily wooded portions of the lower Platte. 

 The record from West Point by Brunei" is probably based on a 

 highly colored male of E. traillii. At Omaha it is a fairly common 

 summer resident and breeder, arriving in May, breeding in June 

 and departing in September (L S. Trostler, L. Skow, etc.). 



West of the Missouri River Region there are no records of the 

 occurrence of this flycatcher, even as a migrant, except that of 

 Cary who states that he " took an adult male on Pine Ridge, Sioux 

 County, Nebraska, about fifteen miles from the northwestern cor- 

 ner of the state, on May 26, 1900" (Auk. xviii, p. 235), which rec- 

 ord was repeated by Crawford (Proc. N. O. U.. ii, p. 27). Ridgway 

 accepts this as a probably casual record (Hull. ■')(). U. H. N. M.. iv, 



