14 



EXTERNAL PARTS 



CHAPTER II 



HEAD AND BODY 



Certatx regions of tlie heud and body have received special 

 names, which are much used in descriptions. A few diagrams 

 and definitions of these parts will be necessary. 



The top of the head (see cut) is the crotcn ; in front of this 

 next the bill is the forehead ; back of the crown is the najic. 

 Above the eye there is a region often marked by a peculiar 

 color; this is the stiperciliarif line, in this book usually called 

 the line over eye. A line around the eye has been called orbital 



;x c R o »^ /v 



._^ , NOSTRIU IN 



line: ovelr eiyc^ \ vv\J^nasal tossa 



\ AURICULAR3 \ 



\ Anqle of Mouth 



ring. A straight band extending from the eye to the bill is 

 called the lore; this strip is bare of feathers on man}' swim- 

 ming birds. Below and back of the eye, in the region of the 

 ear, are the atiriadars. This region, including a little below it, 

 forms the cheek. The back corner of the mouth forms the 

 ricttis. This section is often bristly with hairs which are called 

 rictal bristles. 



