2-4 



FORM AND HABIT: THE WING. 



high, whistling sound. In other eases the shafts of the 

 wing-feathers may be much enlarged and horny, when 



the bird makes a sin- 

 ular snapping sound 



If you recall the 

 supplicating manner of 

 a young bird as with 



Fig. 9. — Winsr of Woodcock, showing three ^ n .• - 



outer attenuate feathers. ('-/■! natural gently lluttenng WlUgS 



''"'''■ ^ 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 ^vill testify, and from this 



Fig. 10. — Jacana, showing spur on wing (natural size) and elongated toes ('/s 

 natural size). 



gesture to the actual delivery of a blow is but a step. 

 Swans, Pigeons, and Chickens can deal forcible blows 

 with their wings. Screamers, Lapwings, and Jacanas 



