GLOSSARY 



OF TECHNICAL TERMS USED IN THE PRECEDING 

 DESCRIPTIONS. 



MEASUREMENTS. 



LENGTH. Distance between the tip of the bill and the end of the longest tail 



feather. 

 EXTENT. Distance between the tips of the outspread wings. 

 LENGTH OF WING. Distance from the angle formed at the (carpus) bend 



of the wing to the end of the longest primary. 

 LENGTH OF TAIL. Distance from the roots of the tail feathers to the end 



of the longest one. 

 LENGTH OF BILL. From the tip of the upper mandible to the point where 



it meets the feathers of the forehead. 

 LENGTH OF TARSUS. Distance from the point where the tarsus joins the 



leg above, to the point where it joins the middle toe below. 

 LENGTH OF TOES. Distance from the point where the leg joiu.s the foot 



along the top to the root of the claw. 

 LENGTH OF CLAWS. Distance m a straight line from the root to the tip ' 



of the claw. 



A 

 ABERRANT. Deviating from ordinary character. 

 ACUMINATE. Tapering gradually to a point. 

 ALBINISM. State of whiteness, complete or partial, arising from deficiency 



or entire lack of pigment in the skin and its appendages. 

 ALULA. Literally, little wing. The bastard wing, composed of the feathers 



which are set on the so-called thumb. 

 ATTENUATE. Slender and tapering toward a sharp point. 

 AXILLARS. Elongated feathers on the sides of the body under the wings. 



B 

 BAND OR BAR. Any color mark transverse to the long axis of the body. 

 BEND OF WING. Angle formed at carpus in the folded wing. 



C 



CALCAREOUS. Chalky. 



CANTHUS. Comer of eye where the lids meet. 

 CAROTID. The principal blood-vessel of the neck. 



CARPAL ANGLE. Prominence at the wrist joint when wing is closed. From 

 this point to the end of the longest quill constitutes the " length of wing." 

 •CERE. Fleshy covering of the base of the bill. 



