B. CLASSIFICATION 



ACCORDING ro STRUCTURAL 



PECULIARITIES 



I. BiUs. 

 II. Crest. 



III. Legs. 



IV. Tail. 



V Sexual Dimorphism. 



I. BILLS 



Birds with Long Bills 



1. The Sunbirds (106-108). (Very small 

 birds with long curved bills.) 



2. The Kingfishers (i 18-120). (Fairly long 

 and straight.) 



3. The Hornbills (121 and 122). (Big birds 

 with long tails.) 



4. The Hoopoe (123). (Bill very long and 

 slightly curved.) 



5. The Black-winged Stilt (187). (Fairly 

 long, very slender.) 



6. The Avocet (188). (Fairly long, slender, 

 with an upward curve.) 



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