24 



12, Cere hidden in feathers; eye 

 in centre of more or less circular 

 feather disks. Tarsus and toes 

 feathered (Figure 32). 



Figure 34. 



Owls. 



p. 129 



m, Feet small and weak. 



13, Nostrils opening in a soft and somewhat 

 swollen base. 



Figure 35. 



Pigeons '. p . Ill . 



14, Two outer toes joined together 

 for half their length. 



Figure 36. 



Kingfishers p. 135. 



15, Two toes directed forward, two 

 backward (see also Woodpeckers). 



Figure 37. 



Cuckoos p . 135 



16. Bill very small; mouth enor- 

 mous, opening to below eyes. 



Figure 38. 



Goatsuckers, Whip-poor-will, Nighthawks p. 143. 



