430 REED-WRIGHT— THE VERTEBRATES OF [October i, 



Migrants begin to arrive the last of March from which time it is 

 common until October 20. Frequently many are seen as late as the 

 first of December. 



XXXVI. Order MACROCHIRES. • The Goatsuckers, Swifts and 



Hummingbirds. 



62. Family Caprimulgid^. The Goatsuckers. 



233 (417). Antrostomus vociferus (Wilson). Whip-poor-will. 

 Common summer resident in the basin from May i to September 



I. In the region about Ithaca it is very uncommon. The latest that 

 it has been observed in the fall is October 7, 1907. The earliest 

 spring record is April 29, 1906. 



234 (420). Chordeiles virginianus (Gmelin). Nighthawk. 

 Common summer resident. The average date of spring arrival 



is May 19, the earliest, May 15, 1906. 



63. Family Miceopodid^. The Swifts. 



235 (423). Chaetura pelagica (Linnzeus). Chimney swift. 

 Abundant summer resident. The average date of spring arrival 



is April 23, the earliest, April 19, 1889. Nests with eggs are found 

 from May 20 to July 5. Usually all have departed in the fall by 

 October i. 



64. Family Trochilid^. The Hummingbirds. 



236 (428). Archilochus colubris (Linnseus). Ruby-throated hum- 

 mingbird. 



Common summer resident from May 10, the average date of 

 spring arrival, to September 10. Nesting dates all fall between May 

 23 and July 21. The crest of the nesting season is between June 15 

 and 30. 



XXXVII. Order PASSERES. The Perching Birds. 

 65. Family Tyrannid^. The Flycatchers. 



237 (444). Tyrannus tyrannus (Linnasus). Kingbird. 

 Common summer resident. The average date of spring arrival is 



May 6, the earliest. May 3, 1902. They nest the very last of May 

 and during June. 



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