27 



Bill very small, wide, and flattened at base. 



(a) (6) 



Figure S4. 



Swallows p. 182. 



Crest and black eye-band most conspicuous. 



Waxwings. 





Figure 55. 



p. 184. 



Tooth near tip of upper mandible. 



Vireos and Shrikes. 



Figure 56. 



pp. 188, 186. 



Small, brightly coloured birds. OUve- 

 greens and yellows are perhaps the 

 commonest colours, but blues, reds, 

 and other colours are often present. 



Figures 57, 58, and 59. 



Wood Warblers p. 190 



Fine sharp bill and long claw on ^ 

 hind toe. 



Figure 60. 



Pipit . 



p. 205. 



57172—3 



