20 



TERMINOLOGY 



CHAP. 



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 



crowQ (veyiex) 



lore 



hind-head {occiput) 

 ear coverts , aurleulars, 



nape (nuc/ia)-'' 



hind-neck (cervix)-'' 

 back (djrsum) 

 scapulars.--"/ 



rump {uropygium) 



upper-tail coverts... 



'.orbit ! forehead (frons) 



' .nostril 

 .' .cere 

 ^. '',' ..ridge (culmen) 



-maxilla 

 .\- cutting edges (toinia) 



<'_ , mandible 

 / \"'gonys 



|,. 'throat iju/a) 

 "lesser coverts 

 fore-neck {j-ugulum) 

 median coverts 

 bastard wing {alulc) 



. greater coverts 



breast {pectus] 



- - secondaries (remiges secunda-rii) 

 belly (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 flv 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 : 



