feeding 

 adaptations 



OF YELLOWSTONE AND 

 GRAND TETON BIRDS 



Through natural selection birds have developed techniques for collecting 

 food in a variety of environmental niches. Some species collect food in 

 a wide range of environments, while others are highly specialized. Pictured 

 here are feeding adaptations of several Yellowstone and Grand Teton 

 birds. 



Red Crossbill 



Evening Grosbeak 



Hairy Woodpecker 



Clark's Nutcracker 



13 



