ZOOLOGICAL DEPARTMENT. 79 



Suborder GYPSELI. Swifts. 



Family MICROPODID^E. Swifts. 

 These birds are wholly insectivorous. 



Subfamily" CHiETURINiE. Spine-tailed Swifts. 

 Genus CENTURA Steph. 



Head and mucroBate tail-feather of Chimney Swift, reduced. 



187^r23-(40S). Chaetura pelag'ica (Linn.). *Chimney Swift; Chimney Swallow. 

 Very common; throughout the state; May to Sept.; " common at Traverse City " 

 (M. L. Leach); I have reports that it is common at Escanaba and Bois Blanc Island; 

 "Mackinac Island" (S.E.White); "common at Iron Mountain" (E. E. Brewster); 

 breeds; two or three brooded; "usually single brooded in Ohio and Indiana "(A.W. Butler); 

 nests in chimneys, rarely in hollow trees or barns, occasionally in nests of barn swal- 

 lows which are first repaired, one case reported; nests made of twigs glued with a 

 secretion formed by the bird; eggs four to six, white; feeds wholly on insects; migrates 

 in fall, often leaving, it is reported, young birds in the nest. These birds are often con- 

 sidered a nuisance in houses having large chimneys. 



Suborder TEOCHILI. Hummingbirds. 



Family TROCHILIDiE. Hummingbirds. 



Wholly American; chiefly from Central and South America; about five hundred 

 species; food, insects and nectar from flowers; beautiful and valuable; Dr. M. Gibbs 

 thinks that the food is almost wholly nectar, but I have .positive proof that they are 

 also insectivorous. 



