508 REPTILES AND BIRDS. 
these proper sentiments yield to the love of destruction—where their 
innocent confidence is rewarded by death. 
The greater number of this genus have the breast and belly white, 
and the upper parts of the body black, tinted with reflected blue 
or peach colour. The White Collared Swift (Cypse/us cayanensis, Fig. 
Y f| | j 
; fi 
SS 
= SS 
—— 
= = 
Fig. 221.—The White Collared Swift. 
221), a South American species, scarcely follows this description, 
it having two white line marks diverging from the bill. There are 
about sixty species spread over the globe, of which six only are natives 
of Europe. 
This family are familiarly known as Swifts, Swallows, House 
Martins, and Sand Martins. Of these the Swift (Cypselus apus, Fig. 222), 
