SCANSORES. 



299 





THE IVORY-BILLED WOODPECKER (Picus Principalis), and the 

 RESPLENDENT TROGON ( Trogon Resplendens). 



ORDER III. SCANSORES* 



The birds composing this order are associated 

 from the common property of having the toes ar- 

 ranged in pairs, two pointing forward and two back- 

 ward : in other words, the outer toe points in the 



* Scando, to climb. 



