s 





7 



1 1 - 



There i* an enormous dilatable sac beneath the lower jaw. 



HORXBILL'S BILL, ADAPTED FOR EXCAVATING A M 

 A TREE, AND ALSO FOR SEIZING AND BREAKING DIVKRSE 

 FORMS OF FOOD, FROM MAMMALS TO TORTOISES, FROM 

 ROOTS TO FRUITS 



The use of the helmet or casque is obscure. 



SfOOMill I '- lill .1.. ADAPTED FOR SIFTING THE MUD AND 

 CATCHIM. THK SMALL ANIMALS, E.G. FISHES, CRUSTACEANS, 

 T LARVAE, WHICH LIVE THERE 



AVOCET'S BILL, AD . , A COUOOI HDBWAT9 



THE SHORE-Po.n.s AM) CATCHING SMALL 

 ANIMALS 



FALCON'S BILL, ADAPTED FOR SEIZING, KILLING, AND 

 TEARING SMALL MAMMALS AND BIRDS 



PUFFINS HILL, ADAPTED FOR CATCHING SMALL HsHES 



NEAR IHi: -I KI ACE OF THE SEA, AND FOR HOLDING THEM 



\VHI.N ( \I(,HT AND CARkVIN.. IIII.M TO THE NEST 



The scaly covering is moulted in the autumn. 



