C. CLASSIFICATION ACCORDING 

 ro COLOUR 



I. Black. 



II. Blue. 



III. Brown. 



IV. Coffee or fawn colour. 

 V. Green. 



VI. Grey. 

 VII. Pink. 

 VIIL Red. 

 IX. White. 

 X. Yellow. 



Colour affords the easiest means of identify- 

 ing the great majority of birds, but in many 

 cases the colours displayed, although con- 

 spicuous and easily recognised, are not of a 

 nature to admit of strict classification. Take, 

 for example, the blues — various species display 

 almost every known shade from slaty grey to 

 turquoise, from purple to ultramarine and 

 indigo. To attempt to distinguish in the 

 lists between the many shades of blue would 

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