Harris Birds of the Kansas City Region. 277 



All three of these Nighthawks have been observed in Swope 

 Park. 



CHORDEILES VIRGINIANUS SENNETTI Coues. Sennett's Night- 

 hawk. 

 Regular but not numerous migrant. 



See the remarks on the Western Nighthawk. 



Suborder Cypseli. Swifts. 



Family MICROPODIDAE. Swifts. 



Subfamily Chaeturinae. Spine-tailed Swifts. 



CHAETURA PELAGICA (Linn.). Chimney Swift. 

 Very common summer resident. 



The forerunners of the hosts of migrating Chimney Swifts 

 arrive between the llth and 18th of April. Some exceptionally 

 early dates are: April 8, 1900, March 20, 1903, March 30, 

 1913, and March 15, 1913. 



The southward moving flocks pass from late in August to 

 early October. During this period the Swifts resort to common 

 roosts and may be seen circling in immense funnel-shaped 

 flocks over large chimneys and about towers, such as several of 

 the public school buildings, the Calvary Baptist Church and the 

 old power-house stack at 8th Street and Woodland. 



Suborder Trochili. Hummingbirds. 

 Family TROCHILIDAE. Hummingbirds. 



ARCHILOCHUS COLUBRIS (Linn.). Ruby- throated Humming- 

 bird. 

 Common summer resident. 



The early Hummingbirds arrive around April 27th, but are 

 not found in numbers until a week or more later. They leave in 

 October. 



The nest, a soft, delicate, cottony cup, decorated with lichens, 

 is one of the wonders of avian architecture and is usually sad- 

 dled on a small horizontal limb ten to fifty feet from the ground. 

 It is often found in orchards. 



