ANIMALS CLASSIFIED 



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ORDER III. Ophidia (snakes). Body 

 elongated, covered with scales. No 

 limbs present. Examples : garter 

 snake, rattlesnake. 



ORDER IV. Crocodilia. Fresh-water 

 reptiles with elongated body and 

 bony scales on skin. Two-paired 

 limbs. Examples : alligator, crocodile. 



The common garter snake. Reduced 

 to about one tenth natural size. 



Birds. Birds among all other 

 animals are known by their cov 

 ering of feathers and the presence of wings. The feathers are de 

 veloped from the skin. These aid in flight, and protect the body 

 from the cold. 



Adaptations in the bills of birds. Could we tell anything about the food of a bird 

 from its bill ? Do these birds all get their food in the same manner ? Do 

 they all eat the same kind of food ? 



The form of the bill in particular shows adaptation to a wonder 

 ful degree. A duck has a flat bill for pushing through the mud and 

 straining out the food ; a bird of prey has a curved or hooked beak 

 for tearing ; the woodpecker has a sharp, straight bill for piercing 

 the bark of trees in search of the insect larva? which are hidden 

 underneath. Birds do not have teeth. 



