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 



crown (vertex) 



hind-head (occiput} 

 ear coverts , aurieulars^ 



nape (micha}-'", 

 hind-neck (cervix}''"' 

 back (dorsum\ 

 scapulars 



rump (uropygium 



; hind-toe (fallux) 



'under tail-coverts and 

 vent (crissuni) 



primaries (rsmiges primarii. ) 



.forehead (from} 

 / , nostril 

 '' /^cere 

 /,-'',.- ridge (culmen) 



^ -maxilla 



-cutting edges (tomia) 



mandible 

 gonys 



'throat (gula) 

 ''-lesser coverts 

 ''fore-neck (jugulum) 

 median coverts 

 bastard wing (alula) 



'. . . greater coverts 

 ""breast (pectus\ 



upper-tail coverts 



y^ secondaries (remiges secunda.ri{) 

 b'elly (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 : 



