INSTINCT AND INTELLIGENCE IN BIRDS 



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Fig. 24. Huge boking of Pileated Woodpecker in a white pine two feet in 

 diameter, to reach galleries of the carpenter ants, seven feet from the ground, where 

 the insect gained entrance ; illustrating either instinct to follow sounds, or intelligence 

 in adapting means to end. 



Fig. 25. Sound Pine Chips from Workshop of Pileated Woodpecker, shown 

 in Fig 24 ; some are bent or broken with the wrenching stroke of the bill. Nat- 

 ural size. 



