10 The Wilson Bulletin — No. 106 



dent. Museum and field notes give May 16 as the date of arrival. 

 Although seldom seen in summer they M'ere daily observed in 1916 

 from September 18 to October 8, when they left. 

 420a. Chordeiles virginianus henry i — Western Nighthawk. 



This species replaces the former in western Kansas. Occasionally 

 found in the eastern part. Museum gives two specimens captured 

 in Douglas County on May 14 and September 12. 

 420c. Chordeiles virginianus sennetti — Sennett's Nighthawk. 



Not uncommon in summer. One record, Lawrence, September 12. 

 Family MICROPOIDAE— Swifts. 

 423. Cheetura pelagicci — Chimney Swift. 



This species is very abundant in summer. In 1916 they left in a 

 body on October 25. They arrived the following spring in abun- 

 dance on April 18. 



Family TROCHILIDAE— Hummingbirds. 

 428. Archilochus eolubris — Ruby-throated Hummingbird. 



Fairly common in summer. They probably arrive somewhat 

 earlier. Museum and field, May 20j to September 17. 



Family TYRANNIDAE — Tyraxt Flycatchers. 



Since the flycatchers feed upon flying insects they must come late 

 and leave early. Phoebe an exception. It feeds also upon other 

 insects. 



443. Mitseivora forfieata — Scissor-tailed Flycatcher. 



A common summer resident in southern Kansas. Has been re- 

 ported as far north as Lawrence. Museum records. May 4, Thomas 

 County; April, no date, Ashland County; September 22, Marshall 

 County. 



444. Tyrannus tyrannus — Kingbird. 



Common in summer. April 26 the date of first arrivals. (1917) 

 few in numbers before May 5. Last field record (1916), Septem- 

 ber 6. Last museum record, September 18. 

 447. Tyrannus vertiealis — Arkansas Kingbird. 



While classed as a common summer bird, it is not so common in 

 eastern Kansas. One observed in field near Lawrence, May 7, 1916. 

 Museum records, September 4, 1906. 

 452. Myiarchus crinitus — Crested Flycatcher. 



Very abundant. Observed daily in considerable numbers May 1, 

 1917, and thereafter. Careful daily observations made in April, 

 but none were seen. Last noticed in 1916 on September 8j Earliest 

 museum record is April 30, 1912. The last record is September 12 

 and 14, Douglas County, and October 6, Cloud County. 

 456. Sayornis phcehe — Phoebe. 



This is the only flycatcher to come early. It is a common sum- 

 mer resident. First seen on March 17, 1917. Became common 



