Fig. 197. Specialization in the legs of birds 



Although the legs of all birds are constructed on th -^^ P Jf ^^ 

 many distinctive features that correspond to ^^^^ ^^ ts . thelonKleg s 

 are the webbed toes of water birds - gull, loon alba ross pehca , the long eg_ 

 of wading birds - heron ; the sharp claws of *"*«?£ »^^ f oot of 

 hawk. Contrast the climbing foot of the woodpecker with ™Pg™ m * 

 the parrot and the ground foot of the sparrow or partridge 



