CLIMBING BIRDS. 



435 



The Woodpeckers (Picm) are distinguished by theii- long, straight, 

 strong beak, which is angular, adapted for piercing the bark of trees ; 

 their remarkable tongue can be extended to a great distance 

 beyond the bill, and is armed near the end with horny barbs 

 directed backwards. Theii- tail is composed of ten stilf and elastic 

 quills that serve them as a support when they climb. They all 

 have the habit of tapping and raising up the bark of trees, to seize 

 the insects concealed beneath. Most Woodpeckers are marked 

 with red either on the head or body. Their cry is sharp, and their 

 flight heav}'. 



Fig. 363.— grkat black avoodpeckee. 



The Wrynecks ( Yun'x) have the protractile tongue of the Wood- 

 jjeeker, but without its spines. Their straight and pointed beak is 

 nearly round, without any well-marked angles, and is not sufficiently 

 strong to penetrate or raise the bark of trees. Like the Woodpeckers, 

 they live on insects, but climb much less. The Wryneck derives its 

 name from a peculiar habit of bending the neck sideways, so tliat 

 the head is turned towards the back with the eyes half closed. 



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