24 



FORM AND HABIT: THE WING. 



lii!>;li, whistling sound. In other eases the shafts of the 

 wuig-featliers may he much enlarged and horny, when 



the bird makes a sin- 

 gular snapping sound 



If you recall the 

 supplicating manner of 

 ^" a young bird as with 



Fig. 9. — WiiiL' of WonJeoe!;, showiut; tliree ii ii ii • 



outw :itu-miate f«utliere. (i/j natural gently tluttermg W]ngS 



"^"■' it begs for food, you 



will recognize one of several ways in which the wings 

 may express emotion. Birds also threaten with their 

 wings, as any hen with chicks will testify, and from this 



Fig. 10. — Jaouna, showiug spur (»ii "wino- (natural t>ize) and elongated toes (Ys 

 natural size). 



gesture to tlie actual delivery of a blow is but a step_ 

 Swans, Pigeons, and Chickens can deal forcible blows 

 with their wings. Screamers, Lapwings, and Jacaiias 



