20 



TERMINOLOGY 



onwards prior to leaving our shores, but after that they may 

 possibly betake themselves aloft to continue their journey. 



The speed at which Birds travel during Migration is a matter 

 on which very diverse opinions have been and are held ; but the 

 highest estimates, such as those of the late Herr Gatke (who 



crown {veriex) ,^ 



\orbit ; forehead {/foiis) 



hind-head {occiput) '. /'. ■ /' .nostril 



/::;^^^^^^^^^~*^-ii-v''' -''' .cere 

 ear coverts , aunculars, 'r^ L^ \\/y' .. ridge {admen) 



nape {nuc/fa)''' 



hind-neck {cervix)-'' 

 back {dorsum) 



scapuIars-'-y^'y 



rump {uropygium). 



upper-tail coverts 



, maxilia 



-cutting edges {tomia) 



/■mandible 

 ■gonys 



'throat {gula) 

 ^lesser coverts 

 ■■fore-neck {jugidiim) 

 median coverts 

 bastard wing {alula) 



greater coverts 

 breast {pectus) 



"- secondaries {rcmiges secuyidarif) 

 beJIy {abdomen) 



Fig. 6. — A Falcon. To shew the nomenclature of the external parts. 



would allow even 150 miles an hour), can scarcely be otherwise 

 than exaggerations; for there is no evidence of any but exceptional 

 performances at such rates, and there is really no reason to suppose 

 that Birds can fly faster at a higher elevation than at a lower. 



Terminology. — The annexed figure explains the nomenclature 

 of most of the outward parts of a Bird, but some further explana- 

 tions may be given, as below : — 



