525 



D. Trunk or Body. 



E. Tail. 



For the purpose of defining the form, markings, coloration, and other peculiari- 

 ties of birds, the different regions of the body have received names by which intel- 

 ligible i-eference can be made to any portion. It is, perhaps, hardly necessary to 

 say that all living birds have a head supported on a neck, with jaws extended 

 into a bill covered with a horny sheath, or with skin, the two jaws situated one 



