text: The color tabs really help you know what section to look at. The only disadvantages of this field guide are that it doesn't document every species in North America and that the new National Geographic Field Guide to the Birds of North America, Fifth Edition has the Blue Grouse split into the Sooty and Dusky Grouse making it more up to date!!!!!!!!!!!!!!! 
  
  Still, this field guide has many good things.
  