190 GOATSUCKERS, SWIFTS, ETC. 



Grouse, wood-colors being the most effective dis- 

 guise for birds tbat uest on the ground. As a 



family the Goatsuckers are 



perhaps more crepuscular 

 than any birds except Owls. 

 FiCx. 100. They are in the same order 



Slender wing of Hum- ^^-^j^ ^j^^ g^^-f^^ . ^^ pj^^^^ 

 miugbircl. 



11. J). 24), and like them have 

 peculiarly small bills and wide, gaping throats, 

 whose doors they throw wide open as, like de- 

 vouring monsters, 

 they mow their 

 way through a 

 cloud of insects. 

 The Whip-poor- 

 FiG. 101. wiiis^ in addition 



Short, thick ^ymg of Sparrow. ^^ ^^^^.^, euomiOUS 



mouths, have long, stiff bristles at the base of 

 the bill, that may be effective aids in holding 

 squirming June bugs and such uneasy prey. 



Fig. 102. 

 Long, slender wing of Swallow. 



The Swallows are our only birds that approach 

 the Goatsuckers and Swifts in form of bill and 



