24 



FORM AND HABIT: THE WING. 



liio-li, wliistlino; sound. In other eases tlie shafts of the 

 wing-feathers may be much enlarged and horny, when 



the bird makes a sin- 

 ^^ guh^r snapping sound 



in flight. 



If you recall the 

 supplicating manner of 

 a young bird as with 



Fig. 9. — Wing of Woodcock, showing three .i u . . • 



outer attenuate feathers. (Va natural gently tluttermg wmgS 



'^'^^-^ 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.— Jaeana, showing sjuir on w'uvj (natural size) and elongated toes ('/g 

 natural sizej. 



gesture to the actual delivery of a l)low is but a step. 

 Swans, Pigeons, and Chickens can deal forcible blows 

 with their wings. Screamers, Lapwings, and Jacanas 



